how does the conservation of angular momentum explain the increased speed of a planet in its orbit at perihelion? quizley

Answers

Answer 1

The conservation of angular momentum explains that a planet moves faster at perihelion due to an increase in angular velocity, resulting in an increase in linear velocity.

The conservation of angular momentum can be found as:

The conservation of angular momentum is a fundamental principle in physics that states that the total amount of angular momentum in a system remains constant unless acted upon by an external force.According to the law of conservation of angular momentum, when a planet moves closer to the Sun at perihelion, the decrease in distance causes the angular momentum to remain constant. Therefore, the velocity of the planet must increase to compensate for the decrease in distance. At perihelion, which is the point in the planet's orbit where it is closest to the Sun, the planet is moving faster than at any other point in its orbit.This is because as the planet gets closer to the Sun, the gravitational force between the two objects gets stronger, causing the planet to speed up in order to maintain its angular momentum.The closer the planet is to the Sun, the faster it has to move to keep from falling into it due to the strong gravitational pull.Therefore, the conservation of angular momentum explains why a planet speeds up at perihelion because the planet has to maintain its angular momentum as it gets closer to the Sun.

To learn more about the angular momentum: https://brainly.com/question/4126751

#SPJ11


Related Questions

a series circuit is a current divider and a parallel circuit is a voltage divider circuit. select one: a. true b. false

Answers

The given statement " A series circuit is a current divider and a parallel circuit is a voltage divider circuit " is True

In a series circuit, the electric current is the same through each component, and the total current is equal to the sum of the currents through each component. Therefore, the current is divided among the components.

In a parallel circuit, the potential voltage across each component is the same, and the total voltage is equal to the sum of the voltages across each component. Therefore, the voltage is divided among the components.

Know more about electric current here:

https://brainly.com/question/2264542

#SPJ11

alston realizes that he wasn't paying attention when thana ran the simulation for which the charge was set to zero, and asks thana to describe the particle's motion. which response is correct?

Answers

Thana explains that when the charge is zero, the motion of the particle in the simulation is a straight line with a constant velocity.

The direction of the velocity depends on the initial conditions and the force acting on the particle. If there are no other forces acting on the particle, it will continue to move in a straight line with a constant velocity until it encounters another force or object. This is an example of Newton's First Law of Motion, which states that an object at rest will stay at rest and an object in motion will stay in motion with a constant velocity unless acted upon by an external force. If there is a force acting on the particle, it will change direction or speed up or slow down. This is an example of Newton's Second Law of Motion, which states that the force acting on an object is equal to its mass times its acceleration. The direction of the force is in the same direction as the acceleration. When the charge is zero, the particle does not experience any force, so it moves in a straight line with a constant velocity. This is a simple example of how particles can be modeled using physics simulations.

For more such questions on Physics simulations.

https://brainly.com/question/28522691#

#SPJ11

what is it called when you can see one image from one angle and a different image from a different angle?

Answers

The phenomenon in which an object appears to be different when viewed from different angles is known as a lenticular image. Lenticular printing is the process of producing these images.

What is Lenticular printing?

Lenticular printing is a method of producing a lenticular image, which is a printed image that shifts as the viewing angle changes. Lenticular printing is a method of generating a composite image by interlacing two or more images using a lenticular lens.

A lenticular image is a picture that appears to alter when viewed from different angles. It is formed by placing a sheet of tiny cylindrical lenses or "lenticules" over a photo that has been divided into a number of frames. The frames are interlaced, resulting in a composite image that alters when viewed from different angles.

The lenticular function as lenses, refracting light at various angles and allowing each eye to see a distinct image. To generate the lenticular image effect, the interlaced images must be magnified and printed onto a lenticular lens. The result is a plastic sheet that appears to display a different image depending on the angle of the viewer's gaze.

To know more about lenticulars image:

https://brainly.com/question/8590716

#SPJ11

TRUE/FALSE. when air masses of different densities collide, the less dense air mass is forced to rise through frontal lifting.

Answers

TRUE. When air masses of different densities collide, the less dense air mass is forced to rise through frontal lifting.

In meteorology, a front is a transition area between two air masses of different densities. The atmosphere's temperature, moisture content, and wind direction are all influenced by these air masses. The types of fronts are warm, cold, stationary, and occluded fronts. The front types are determined by the characteristics of the air masses and the direction of their movement. The types of the front are Warm front: When a warm air mass replaces a cold air mass, it is called a warm front. Warm fronts typically move more slowly than cold fronts. Cold front: A cold front happens when a cold air mass replaces a warm air mass. They have steeper pressure gradients than warm fronts, and they travel faster. Rain, thunderstorms, and cold temperatures are all common with this type of front. Stationary front: This occurs when two air masses meet and neither advances. There is a lot of rain along the stationary front. Occluded front: This is a type of front that develops when a cold front overtakes a warm front. When the cool air catches up to the warm air, an occluded front forms. The fronts can cause precipitation to fall.

Learn more about air masses at brainly.com/question/12089291

#SPJ11

calculate the acceleration of a 330000- kg jumbo jet just before takeoff when the thrust on the aircraft is 160000 n .

Answers

To calculate the acceleration of a 330000-kg jumbo jet just before takeoff when the thrust on the aircraft is 160000 N, we must use Newton's second law of motion. This states that the net force on an object is equal to the product of its mass and acceleration, or F=ma.

Thus, we can rearrange the equation to solve for acceleration, a = F/m. In this case, a = 160000 N/330000 kg = 0.485 m/s2. This means that the jumbo jet will accelerate at 0.485 m/s2 just before takeoff.

To explain further, when an object experiences a force, it will accelerate. The acceleration is determined by the size of the force, the mass of the object, and the direction of the force. In the case of the jumbo jet, the force is provided by the thrust of its engines, and the mass of the object is 330000 kg.

As the thrust is 160000 N, the acceleration of the jumbo jet will be 0.485 m/s2. This is the acceleration that the jumbo jet will experience just before takeoff.

To know more about acceleration refer here:

https://brainly.com/question/30660316#

#SPJ11

determine the values of the mass m for which this system is, respectively, underdamped, overdamped and critically damped.

Answers

The values of the mass m for which the system is underdamped, overdamped and critically damped are m < β/2ω, m > β/2ω, and m = β/2ω, respectively.

To determine the values of mass m for which the system is underdamped, overdamped and critically damped, we need to first understand the underlying mathematics behind damping. Damping is a force that acts on a body to oppose its motion, and the damping coefficient, β, is a measure of how much this damping force opposes the motion.

The damping ratio, ζ, is then a measure of how strong the damping is, in relation to the system's natural frequency. Specifically, ζ = β/2mω ,where m is the mass, and ω is the angular frequency.

Underdamping occurs when ζ is less than one, so when m < β/2ω.

Overdamping occurs when ζ is greater than one, so when m > β/2ω. Critically damping occurs when ζ equals one, so when m = β/2ω.

for such more question on mass

https://brainly.com/question/19385703

#SPJ11

how many springs does it take to model the thermal energy of diamond and how many for solid argon? explain/justify your answer using appropriate components of the particle model of thermal energy and/or previous models we have used.

Answers

In order to model the thermal energy of diamond, 4 springs are required, while the model the thermal energy of solid argon 3 springs are required.

Thermal energy is the internal energy in a substance, that is, the energy of the particles that make up a substance. When two objects at different temperatures come into contact, the heat is transferred from the hotter object to the colder object until both objects reach the same temperature. A system of springs may be used to represent a solid. The particles of a solid are represented by the springs, which are elastic. The more energy the system has, the more the springs will vibrate.

The particle model of thermal energy is based on the idea that all matter is made up of tiny particles that are constantly in motion, and that the faster these particles move, the hotter the object becomes. To model the thermal energy of diamond, four springs are required because diamond is a covalent network solid in which each carbon atom is bonded to four other carbon atoms in a tetrahedral arrangement. Diamond's structure is made up of carbon atoms bonded together by strong covalent bonds. When a carbon atom is bonded to four other carbon atoms, it forms a very strong and stable tetrahedral structure. Diamond's thermal energy is modeled using four springs.

To model the thermal energy of solid argon, three springs are required because argon is a noble gas with a face-centered cubic structure. Solid argon, like other noble gases, has a simple structure. The argon atoms in solid argon are arranged in a cubic array, with an atom at each corner and one in the center of each face of the cube. To model the thermal energy of solid argon, three springs are used. The thermal energy is modeled using these three springs.

Learn more about thermal energy at:

https://brainly.com/question/16953428

#SPJ11

You're designing an external defibrillator that discharges a capacitor through the patient's body, providing a pulse that stops ventricular fibrillation. Specifications call for a capacitor storing 250 J of energy; when discharged through a body with R = 48 Ω transthoracic resistance, the capacitor voltage is to drop to half its initial value in 10 ms.
A) Determine the capacitance (to the nearest ) 10 μF).
B) Determine initial capacitor voltage (to the nearest 100 V) that meet these specs.
I need both correct answers to 2 significant figures.

Answers

a..... 1.04 x 10⁻⁴ Vi

b.... 9500 V

A) Determine the capacitance (to the nearest 10 μF).

First, we should identify the formula that we will use to solve the problem.

The formula that relates to capacitance is:

C = 2E / V². Where C is the capacitance in farads, E is the energy stored in joules, and V is the voltage across the capacitor in volts.

Converting the energy to joules, we have: E = 250J.

Now we know that the voltage needs to drop to half of its initial value in 10 ms. We can use the following formula to calculate the capacitance: C = R x t / ln(Vi / Vf) where R is the resistance in ohms, t is the time in seconds, Vi is the initial voltage, and Vf is the final voltage, which is half of the initial voltage.

B) Plugging in the given values, we get:

C = 48 x 0.01 / ln(Vi / (Vi / 2))Simplifying and solving for capacitance, we get:

C = 1.04 x 10⁻⁴ ViNow we can use the energy formula to solve for Vi:Vi = √(2E / C)

Plugging in the given values, we get:Vi = √(2 x 250 / 1.04 x 10⁻⁴)Simplifying and solving for Vi, we get:Vi = 9469 V

Therefore, the capacitance that meets these specifications is 100 μF and the initial capacitor voltage that meets these specifications is 9500 V, to the nearest 100 V.

Learn more about capacitance

brainly.com/question/28445252

#SPJ11

an incompressible substance with a density of 1000 kg/m3 is isothermally compressed from 100 to 1000 kpa. determine the change in enthalpy. multiple choice question. 900 kj/kg 0 kj/kg 10 kj/kg 0.9 kj/kg

Answers

The change in enthalpy is  0 J/kg if the incompressible substance with a density of 1000 kg/m3 is isothermally compressed from 100 to 1000 kpa. Thus, option b is correct.

The given data is as follows:

The density of substance = 1000 kg/m3

In-compression pressure = 100 to 1000 kph

The given substance is incompressible. So its specific volume stays constant during the process. The work done is Zero.

Assuming that the process is Isothermal, the temperature remains steady.

The change in enthalpy is calculated by using the formula:

ΔH = m × C × ΔT

The density of mass is calculated by using the formula,

m = V × ρ = 1 m3 × 1000 kg/m3

m = 1000 kg

Change in enthalpy is calculated as:

ΔH = m × C × ΔT

ΔH = 1000 kg × 0 J/(kg·K) × 0 K

ΔH = 0 J/kg

Therefore we can conclude that the change in enthalpy is  0 J/kg.

To learn more about enthalpy

https://brainly.com/question/24170335

#SPJ4

The complete question is-

an incompressible substance with a density of 1000 kg/m3 is isothermally compressed from 100 to 1000 kph. determine the change in enthalpy. multiple choice questions.

a.900 kj/kg

b. 0 kj/kg

c.10 kj/kg

d.0.9 kj/kg

helppp pleaseeee enough points

Answers

The resistance of the copper wire of length 4 m and diameter 0.002 m is 2.25×10⁻² ohms.

What is resistance?

Resistance is the opposition to the flow of current in a circuit.

To calculate the reistance of the copper wire, we use the formula below.

Formula:

R = 4ρL/πd².................. Equation 1

Where:

R = Resistance of the copper wireρ = Resistivity of the copper wire at 20°CL = Length of the copper wired = diameter of the copper wireπ =  constant called Pie

From the question,

Given:

d = 0.002 mL = 4 mρ = 1.77×10⁻⁸ ohm-metreπ = 3.14

Substitute these values into equation 1

R = (4×4×1.77×10⁻⁸)/(3.14×0.002²)R = 2.25×10⁻² ohms

Hence, the resistance of the copper wire is 2.25×10⁻² ohms.

Learn more about resistance here: https://brainly.com/question/29635283

#SPJ1

two 4.0cm*4.0cm metal plates are separated by a 0.20-mm-thick piece of teflon. a. what is the capacitance? b. what is the maximum potential difference between the plates?

Answers

The capacitance of two metal plates separated by a 0.20-mm-thick is approximately 0.25 pF  and the maximum potential difference between the plates is 8.4 kV.

a. The capacitance of two metal plates separated by a 0.20-mm-thick piece of Teflon is approximately 0.25 pF (picofarad).

b. The maximum potential difference between the two metal plates is determined by the permittivity of the dielectric material, which in this case is Teflon.

The permittivity of Teflon is about 2.1 and the capacitance of the plates is 0.25 pF, so the maximum potential difference between the plates can be calculated using the equation:

Vmax = (permittivity * Capacitance) / Area.

Therefore, the maximum potential difference between the plates is 8.4 kV.

For more such questions on capacitance , Visit:

https://brainly.com/question/13578522

#SPJ11

an asteroid orbits the sun in a highly elliptical orbit. as the asteroid gets closer to the sun, how are the total mechanical energy and gravitational potential energy of the asteroid-sun system changing, if at all?

Answers

The total mechanical energy and gravitational potential energy of the asteroid-sun system will change.

Asteroid-sun system

As the asteroid gets closer to the sun in its highly elliptical orbit, both the total mechanical energy and gravitational potential energy of the asteroid-sun system will change.

The total mechanical energy of the asteroid-sun system is the sum of its kinetic energy and gravitational potential energy. As the asteroid moves closer to the sun, its kinetic energy will increase due to the increase in speed, but its gravitational potential energy will decrease due to the decrease in distance from the sun. Therefore, the total mechanical energy of the asteroid-sun system will remain constant, according to the law of conservation of energy.

However, if the asteroid encounters any gravitational forces or other external forces, such as a collision with another object or a thrust from a spacecraft, its mechanical energy can change.

More on asteroids can be found here: https://brainly.com/question/19161842

#SPJ1

What is the contour interval of this map?
v

Answers

The contour interval on a map represents an elevation difference between two contour lines next to each other.

What exactly does elevation mean?

Anything that was previously elevated in height. Altitude is the distance from the sea to a point. Every sixth contour line has an index contour, which is a bolder or thicker line.

Elevation above sea level is the definition of elevation for a location. Around 13,000 feet more than sea level, I believe, is where we are now.

The contour elevation is the difference or distance between the elevation of the contour line. The elevation shift from one contour line to the next remains constant within a single map. Several maps have a contour interval of 40 to 80 feet.

Thus, the elevation difference between two contour lines placed adjacent to one another is represented by the contour interval on a map.

To know more about elevation visit:

brainly.com/question/30929506

#SPJ1

an electron and a proton are each placed at rest in a uniform electric field of magnitude 498 n/c. calculate the speed of each particle 44.4 ns after being released.

Answers

An electron and a proton are placed at rest in a uniform electric field of magnitude 498 N/C. The speed of electron and proton 44.4 ns after being released is -3.87 × 10⁶ m/s and 2.13 × 10³ m/s respectively.

Given data:

Electric field (E) = 498 N/C,

Time (t) = 44.4 ns = 44.4 × 10⁻⁹ s,

Mass of electron (m₁) = 9.11 × 10⁻³¹ kg,

Mass of proton (m₂) = 1.67 × 10⁻²⁷ kg.

Formula:

The acceleration produced in the electric field is given by a = qE/m, where q is the charge of the particle, E is the electric field strength, and m is the mass of the particle.

From the above formula, we can find the acceleration produced by the electric field on the electron and proton as follows:

For electron (q = -e, where e is the charge of an electron)

a₁ = qE/m₁ = -eE/m₁

= -1.6 × 10⁻¹⁹ × 498/9.11 × 10⁻³¹

= -8.73 × 10¹⁴ m/s²

For proton (q = +e, where e is the charge of an electron)

a₂ = qE/m₂ = eE/m₂

= 1.6 × 10⁻¹⁹ × 498/1.67 × 10⁻²⁷

= 4.80 × 10⁷ m/s²

Using the kinematic equation, v = u + at, where u is the initial velocity, we can find the speed of each particle 44.4 ns after being released as follows:

For electron,

v₁ = u₁ + a₁t = 0 + (-8.73 × 10¹⁴) × 44.4 × 10⁻⁹

= -3.87 × 10⁶ m/s

For proton,

v₂ = u₂ + a₂t = 0 + (4.80 × 10⁷) × 44.4 × 10⁻⁹

= 2.13 × 10³ m/s

Thus, the speed of the electron is -3.87 × 10⁶ m/s and the speed of the proton is 2.13 × 10³ m/s.

To know more about electric field, refer here:

https://brainly.com/question/15800304#

#SPJ4

which of the following are irreversible thermodynamic processes? check all that apply. which of the following are irreversible thermodynamic processes?check all that apply. the slow and adiabatic expansion of a gas the spontaneous flow of heat from a hot body to a cooler body the conversion of work to heat by friction the free expansion of a gas

Answers

Answer:

Explanation:

The irreversible thermodynamic processes are:

The conversion of work to heat by friction

The free expansion of a gas

The slow and adiabatic expansion of a gas is a reversible process, while the spontaneous flow of heat from a hot body to a cooler body is a natural, irreversible process, but it is not a thermodynamic process per se.

what are the major factors in explaining why some jovian moons are more geologically active than terrestrial worlds of similar or larger sizes?

Answers

The major factors in explaining why some Jovian moons are more geologically active than terrestrial worlds of similar or larger sizes are the effects of tidal heating and the presence of a large planetary body providing gravitational forces.

The main factors geologically active than terrestrial worlds are also because:

The effects of Tidal heating is caused by the gravitational force of the large planetary body the moon orbits, which cause the moon to flex and deform internally, releasing energy as heat. This process is more pronounced in moons of Jovian planets due to the stronger gravitational pull of these much larger bodies. This heat is then released through the moon’s surface, causing geological activity. Terrestrial worlds do not experience such a strong gravitational pull and therefore do not experience this form of tidal heating.

Overall the combination of tidal forces, volatile materials, lack of atmospheric erosion, and different composition can all contribute to the greater geological activity seen in some Jovian moons compared to terrestrial worlds

To know more about the 'terrestrial world':

https://brainly.com/question/17210115

#SPJ11

a bowling ball has a mass of 6 kg. if you slowly roll the ball off the edge of a table 1.5 m high table, what is the kinetic energy of the ball when it hits the ground?

Answers

The kinetic energy of the ball when hits the ground is 88.2 J

The formula for calculating kinetic energy is

KE = 1/2mv²

Where KE is kinetic energy, m is mass, and v is velocity.

We have, the mass of the bowling ball is 6 kg, and it is dropped from a height of 1.5 m, we can calculate its velocity just before it hits the ground as follows:

Potential energy = mgh

Where m = mass of the object = 6 kg

g = acceleration due to gravity (9.8 m/s²), and

h = height from which the object is dropped = 1.5 m

PE = mgh

= (6 kg)(9.8 m/s²)(1.5 m)

= 88.2 J

The potential energy of the bowling ball is 88.2 J.

This is equal to its kinetic energy just before it hits the ground.

Therefore, the kinetic energy of the ball is 88.2 J.

To know more about "kinetic energy": https://brainly.com/question/25959744

#SPJ11

how far is the spring compressed question undergrad physics inclined plane where height is not given

Answers

The spring is compressed by 0.84 meters.

The potential energy of the block at the starting point is given by,

mgh = 2 x 9.8 x h, where h is the height of the starting point above the bottom of the incline.

Using the given inclination angle of 37 degrees, we can find h as,

h = 4.8 sin(37) = 2.88 m

We can equate the potential energy at the starting point to the energy stored in the compressed spring and the kinetic energy at the bottom of the incline,

mgh = 1/2 kx^2 + 1/2 mv^2

where x is the distance that the spring is compressed, v is the velocity of the block at the bottom of the incline, and k is the spring constant.

Since the block is sliding without friction, we can use conservation of energy to find v as,

mgh = 1/2 mv^2

v^2 = 2gh

v = √(2gh)

Substituting this expression for v in the earlier equation,

mgh = 1/2 kx^2 + 1/2 m(2gh)

2gh = kx^2/m + 2gh

x^2 = 2ghm/k

x = √(2ghm/k)

Substituting the known values,

x = √(2 x 9.8 x 2 x 2.88 / 1000) = 0.84 m

To know more about spring, here

brainly.com/question/14670501

#SPJ4

--The complete question is, A spring is fixed at the bottom end of an incline of inclination 37∘. A small block of mass 2 kg starts slipping down the incline from a point 4.8 m away (along the inclined plane) from the spring. The spring constant is 1000 N/m. How far is the spring compressed?--

one cycle of the power dissipated by a resistor ( ) is given by this periodic signal repeats in both directions of time. what is the amplitude of the pwm voltage signal applied across the 500- resistor

Answers

The maximum amplitude of the PWM voltage signal applied across the 500-ohm resistor is: Vmax=2*I*R=500*I

The power dissipated by a resistor during one cycle is given by the periodic signal. The PWM voltage signal applied across a 500 Ω resistor is analyzed in this question. The amplitude of the signal is determined below.

Pulse Width Modulation is the PWM. It's a process for varying the pulse width of a square wave, which changes the percentage of time the signal is high to low. The pulse width can be varied to create the desired output signal level. It is frequently utilized in applications where analog signals are required, including control systems, power supplies, and audio systems. The maximum voltage Vm of the PWM voltage signal can be found by calculating the RMS value of the pulse. The root-mean-square value is the square root of the mean of the square of the signal over a given period. If we use a pulse that has a duty cycle of 50%, this formula simplifies to: Vmax=Vm+0.5Vdc where Vdc is the average value of the pulse.

The maximum amplitude can be determined using this formula: Vmax=I*R where I is the current and R is the resistance. The current flowing through the resistor is proportional to the voltage applied to it, and the voltage is proportional to the duty cycle of the PWM signal, which varies from 0 to 1. Thus, the voltage applied to the resistor is proportional to the duty cycle and can be expressed as: V=Vmax*D where D is the duty cycle. Thus, the amplitude of the PWM voltage signal applied across a 500-ohm resistor is: Vmax=2*I*R=500*I. Using this equation, we can determine the maximum amplitude of the PWM voltage signal applied across the 500-ohm resistor.

For more such questions on Pulse Width Modulation.

https://brainly.com/question/29358007#

#SPJ11

a ball of mass is dropped. what is the formula for the impulse exerted on the ball from the instant it is dropped to an arbitrary time later?

Answers

The formula for the impulse exerted on the ball from the instant it is dropped to an arbitrary time later is:

Impulse = (Final momentum - Initial momentum)

What is impulse?

Impulse is a vector quantity having both magnitude and direction, whereas momentum is a vector quantity, but the impulse is not equal to momentum. The impulse is the change in momentum.

If a ball of mass m is dropped from rest, then its initial momentum is zero.

The final momentum of the ball after falling for time t is:

Final momentum = mv

Where v is the velocity of the ball after falling for time t.

Therefore, the impulse exerted on the ball from the instant it is dropped to an arbitrary time later is:

Impulse = (mv - 0) = mv

To know more about impulse:

https://brainly.com/question/14073258

#SPJ11

a rock weighs 50.0 n in air and 42.6 n in water. what is the buoyant force on the rock? group of answer choices 5.0 n 7.4 n none of these. 50 n 42.6 n

Answers

The buoyant force on the rock is 7.4 N. This is calculated by subtracting the weight of the rock in water (42.6 N) from the weight of the rock in air (50 N), yielding a result of 7.4 N.

What is Archimedes' principle?

Archimedes' principle is a scientific concept that describes the displacement of fluid when an object is placed in it. This principle is used to determine whether an object will float or sink in a fluid. Archimedes' principle is stated as follows: An object fully or partially submerged in a fluid is buoyed up by a force equal to the weight of the fluid displaced by the object. In other words, the buoyant force on an object is equal to the weight of the fluid it displaces.

The weight of the rock in the air is equal to its actual weight. However, the weight of the rock in water is decreased due to the buoyant force of the water acting on the rock. Therefore, the buoyant force on the rock can be determined by calculating the difference between the rock's weight in air and its weight in water. The buoyant force on the rock is 7.4 N. Hence, option B is the correct answer.

Read more about the water:

https://brainly.com/question/1313076

#SPJ11

how hard must she pull downward to raise herself slowly at constant speed? the mass of the person plus the bucket is 77 kg .

Answers

The person must pull downward with a force equal to her weight, which is approximately 760 N in order to raise herself slowly at a constant speed.

When the person pulls downward on the bucket, there are two forces acting on the system: the force of gravity pulling the person and the bucket down, and the force of the person pulling the bucket up. In order for the person to raise herself at a constant speed, the force she exerts on the bucket must be equal and opposite to the force of gravity pulling her down.

The force of gravity on the person and the bucket is equal to their combined weight, which can be calculated as mass times gravitational acceleration (77 kg x 9.81 m/s^2 = 755.37 N). Therefore, the person must exert a force equal to her weight (approximately 760 N) in order to counteract the force of gravity and raise herself at a constant speed.

Thus, to lift herself up slowly and steadily, the person needs to exert a downward force that is equivalent to her weight, which is around 760 Newtons.

To know more about gravitational acceleration click here:

https://brainly.com/question/30429836

#SPJ11

The top view below shows a record that is spinning counterclockwise at a constant rate. Which of the following statements are true? Choose all that apply.
-A and B have the same linear velocity
-A has a greater linear velocity than B
-B has a greater linear velocity than A
-A and B have the same angular velocity
-A has a greater angular velocity than B
-B has a greater angular velocity than A

Answers

From the top view of the spinning record, we can see that points A and B are at different distances from the center of rotation. Therefore, they have different linear velocities.

A has a greater linear velocity than B: True

B has a greater linear velocity than A: False

A and B have the same linear velocity: False

However, both points A and B are at the same distance from the center of rotation. Therefore, they have the same angular velocity.

A and B have the same angular velocity: True

A has a greater angular velocity than B: False

B has a greater angular velocity than A: False

In summary,

A has a greater linear velocity than B

A and B have the same angular velocity.

For more details about distances click here:

https://brainly.com/question/15172156#
#SPJ11

37. a wheel has a constant angular acceleration of 5.0rad/s2 . starting from rest, it turns through 300 rad. (a) what is its final angular velocity? (b) how much time elapses while it turns through the 300 radians?

Answers

This means that it took time of 60 seconds for the wheel to turn through 300 radians

The final angular velocity of the wheel can be calculated using the equation

[tex]$\omega_{f} = \omega_{i} + \alpha \cdot t$,[/tex]

where $\omega_{f}$ is the final angular velocity, $\omega_{i}$ is the initial angular velocity, $\alpha$ is the angular acceleration, and $t$ is the elapsed time. As the wheel starts from rest

($\omega_{i} = 0$),

the final angular velocity is equal to the angular acceleration multiplied by the elapsed time.

Therefore,

[tex]$\omega_{f} = 5.0 \, \text{rad/s}^2 \cdot t$.[/tex]

To find the elapsed time, we can rearrange the equation to get

[tex]$t = \frac{\omega_{f}}{\alpha} = \frac{300\, \text{rad}}{5.0\, \text{rad/s}^2} = 60\, \text{s}$.[/tex]

To learn more about Time :

https://brainly.com/question/30481593

#SPJ11

a cell phone battery holds a maximum charge of 1.420 ah. how long will it take a charger to fully charge the battery if it starts with zero charge and is charged at a constant rate of 900.0 ma?

Answers

If the cell phone battery starts out with no charge and is charged at a constant rate of 900.0 mA, it will take roughly 5,680 seconds or 94.7 minutes to fully charge.

What is the energy consumption of a phone charger?

Electricity consumption for phone chargers is typically 5 watts (W) or less. While some faster chargers can use up to 20 W, the majority of standard chargers are closer to the 5–10 W range. Typically, phone chargers connect to a 120-volt outlet and draw one to two amps.

We can apply the following formula to resolve this issue:

time = (charge / current)

charge = 1.420 Ah x 3,600 C/Ah

= 5,112 C

The charging current is then changed from milliamperes (mA) to amperes (A):

current = 900.0 mA / 1,000 = 0.9 A

We can now enter the values into the formula as follows:

time = (charge / current)

= (5,112 C / 0.9 A)

= 5,680 seconds.

To know more about charge visit:-

https://brainly.com/question/14713274

#SPJ1

if you have an unmarked bar magnet and an identical unmagnetized bar of iron, how can you determine which is the magnet?

Answers

Iron that is not magnetic will be drawn to a bar magnet. An atom is like a current loop, if it is not observed than it is a magnet.

A piece of iron, which has magnetic qualities, aligns into two poles when placed in the magnetic field of a bar magnet.

If the north pole reports the side in front of it, it is the north pole, and if the south pole reports the south pole, it is the south pole. A piece of iron, which has magnetic qualities, aligns into two poles when placed in the magnetic field of a bar magnet.

Charges that are in motion within an atom produce electricity. The atoms can act as an equivalent current loop thanks to their rotational orbits. Iron is nevertheless drawn to magnetic fields despite their being no current.

To know more about magnetism, visit,

https://brainly.com/question/12740727

#SPJ4

would a point closer to the center of the hard drive have a higher, lower, or the same linear acceleration?

Answers

A point closer to the center of the hard drive will have a lower linear acceleration than a point farther from the center. This is due to the fact that linear acceleration is inversely proportional to the radius of rotation. The acceleration is greatest at the outer edges and decreases toward the center.



What is linear acceleration?

Linear acceleration is the rate of change of the velocity of an object that moves in a straight line. It is also referred to as the object's increase in speed or decrease in speed. The same concept applies when it comes to hard drives.

It is pertinent to understand that linear acceleration decreases when the radius of the disk decreases, which means that the closer the point is to the center, the lower the linear acceleration would be. This is why the outermost tracks have higher transfer rates and are utilized more for storing data on hard drives.

Read more about acceleration :

https://brainly.com/question/460763

#SPJ11

A student builds an electromagnet using a variable power source and 40 turns of wire. The electromagnet is used to pick up metal paper clips. The student changes the voltage and counts the number of paper clips that are picked up. Which table could be the data the student collected?


Table A

Table B

Table C

Table D

Answers

The table that could be the data the student collected is table D.

What is an electromagnet?

An electromagnet is described as a type of magnet in which the magnetic field is produced by an electric current and usually consist of wire wound into a coil.

If student builds an electromagnet using a variable power source and 40 turns of wire. We have it that the student changes the voltage and counts the number of paper clips that are picked up. The table described below could perfectly described the scenario.

This is Table D

Voltage (V)

3

6

9

12

Number of paper clips

9

18

27

36

Learn more about electromagnet at: https://brainly.com/question/12555869

a rod undergoes a change in temperature. the change in length is: a rod undergoes a change in temperature. the change in length is:

Answers

It is a linear expansion, when a rod undergoes a change in temperature and there is a change in its length.

The length that a rod changes to as a result of a temperature change relies on the rod's initial length, the rate of temperature change, and the material's coefficient of linear expansion. The formula for linear expansion is:

ΔL = αL₀ΔT

Where ΔL is the change in length of the object, is the coefficient for linear expansion of the material in question, and L₀ is the initial length of the object.

Volumetric expansion refers to change in one dimension (volume), whereas linear expansion refers to change in one dimension (length) (volumetric expansion). The area thermal expansion coefficient connects a material's area changes to temperature changes.

To know more about linear expansion, refer:

https://brainly.com/question/19495810

#SPJ4

Complete question is:

A rod undergoes a change in temperature. the change in length is:

A. linear expansion

B. volumetric expansion

which of the following appliances has the lowest typical energy costs? (1 point) group of answer choices dishwasher microwave oven washing machine refrigerator

Answers

Among the given options, the appliance with the lowest typical energy cost is the microwave oven. Typical energy cost refers to the average amount of money spent on energy usage by an appliance or device over a certain period of time.

Microwave ovens use electromagnetic radiation to cook or heat food, and they are generally more energy-efficient compared to other appliances such as dishwashers, washing machines, and refrigerators. This is because microwave ovens use less power and cook food faster than conventional ovens, reducing energy waste and costs. However, it is important to note that the exact energy cost of an appliance can depend on factors such as its age, model, usage, and energy efficiency rating.

Learn more about microwave ovens: https://brainly.com/question/1120515

#SPJ11

Other Questions
comparative advantage argument (what is floating rate debt, anyway?). how does the swap dealer hedge his currency risk as counterparty in the currency swap? if an increase in government spending of $278 billion increases equilibrium output by a total of $544 billion, then the marginal propensity to consume must be: internment by samira ahmed Questions 1. our legs are caught in the teeth of a steel trap why is this metaphor? use the italicized answer 2. he sounds like a talking manual is a simile why ? write a complete sentence for your answer using the model in question 3. a square window looking at the mountains in the distance is personification why? write a complete sentence for your answer using the model in question 4. as the internees gather for orientation layla is struck by the Americanness of the throngs of people what does she mean by this ?5. what happens to the woman who yells traitors during the orientation?6. why do you think she is punished like this ?7. what is one thing that all the detainees have in common?8. who are the minders and what is their job ?9. summarize chapter 7 in three or four sentences ?10 write a 6-word summary of this chapter. stars that lie in different places on the main sequence of the h-r diagram differ from each other mainly by having different: Find the missing dimension of the triangle. 1.5 in Area = 2 inpls help I'll mark brainlisest what is the speed of a spacecraft moving in a circular orbit just above the lunar surface? express your answer using two significant figures. 2 cards are selected from a standard deck of 52 cards. (don't know about playing cards? click here.) the first card is not placed back in the deck before the second card is drawn. match the probabilities to their corresponding situations. question 4 options: 3 p(spade and ace of hearts) 4 p(2 aces) p(2 of the same card) 2 p(red card and four of spades) 1 p(heart and club) 1. 13/204 2. 1/102 3. 1/204 4. 1/221 5. 0 . a local finance company quotes an interest rate of 18.4 percent on one-year loans. so, if you borrow $20,000, the interest for the year will be $3,680. because you must repay a total of $23,680 in one year, the finance company requires you to pay $23,680/12, or $1,973.33, per month over the next 12 months. is the interest rate on this loan 18.4 percent? what rate would legally have to be quoted? what is the effective annual rate? true or false 2. the 8-inch pid is more effective than the 16-inch pid in reducing radiation exposure to the patient. to determine the present value of a bond that pays semiannual interest, which of the following adjustments should not be made to compute the price of the bond? a. the number of annual periods should be doubled. b. the annual discount rate should be divided by 2. c. the annualized coupon should be split in half. d. the par value should be split in half. e. all of these choices are adjustments have to be made. briefly explain why a permanent temperature inversion (temperature increases with height) occurs throughout stratosphere an audio speaker producing a steady sound at an outdoor concert is 18 ft away from you. if you move to a position where the speaker is 78 ft distant, by what factor will the amplitude of the sound change? serena's gross monthly income is $4,000. her federal, state, and city taxes amount to $1,000 and a monthly ira contribution of $500 are deducted from her monthly pay. what is the maximum amount serena should spend on credit card payments? Part AIn your own words, describe the relationship between Florida's large population of Cuban immigrants and the decision of the United States toenter the war. Max Points Question of the day ^^What period of photography history is primarily comprised of the invention of new techniques to produce photographs and the discovery of new uses for photography including portraits, city scenes, war photography, landscapes, and humorous narratives?A. Monder photography. (1900- 1945)B. Digital Photography (2000 - PresentC. Early Photography (1839- 1900)D, Contemporary Photography. (1945 -2000)Credit to Kelly H. for the question Help please its urgent your chronometer is set for greenwich mean time (gmt or universal time, ut). high noon at your present location is 9 pm ut. what is your longitude? Suppose a recent government report indicates that 79% of the labor force is white. Of the individuals in the labor force who are white, 5% are unemployed. Among the individuals in the labor force who are not white, 9% are unemployed.Let be the event that a randomly selected member of the labor force is white and let be the event that a randomly selected member of the labor force is unemployed.Determine () , the probability that a randomly selected member of the labor force is white given that he or she is unemployed. Express your answer as a percentage with no decimal places. a cable with 19.01 n of tension pulls straight up on a 1.79 kg block that is initially at rest. what is the block's speed after being lifted 1.62 m? Find f(2) if f(x) = (x + 1)2.If f(x) is a function and f(1) = 5, then which of the following could not be true?