Help pls!!

Calculate the wavelength of a water wave with a speed of 2.3 m/s and
frequency of 5 Hz.

Explanation:

As the distance increases, the absolute value of the force decreases. Therefore, the correct answer is "increases; decreases". This is in accordance with Coulomb's Law, which states that the force between two charges is directly proportional to the product of the charges and inversely proportional to the square of the distance between them. As the distance between the charges increases, the force between them decreases because the inverse square relationship causes the force to weaken rapidly with distance.

Heat naturally flows from an object that has a high temperature to an object that has a low temperature. Heat can be made to flow in the reverse direction if temperature  is done. A machine can never have an efficiency of fuel . This means that heat energy can never be fully converted into mechanical  energy.

What is temperature ?

The movement of these particles likewise increases with rising temperature. A thermometer or a calorimeter are used to measure temperature.

What is kinetic energy ?

When an item undergoes work—the transfer of energy—by being subjected to a net force, it accelerates and acquires kinetic energy.

Therefore,Heat naturally flows from an object that has a high temperature to an object that has a low temperature. Heat can be made to flow in the reverse direction if temperature  is done. A machine can never have an efficiency of fuel . This means that heat energy can never be fully converted into mechanical  energy.

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The period of the wave is the inverse of the frequency. The distance between the two successive crest or troughs is known as the wavelength. The period of the wave is 0.020 s.

The time taken by the particle of the medium to complete one vibration is defined as the period of the wave. The number of oscillations per second is known as the frequency. The equation used to calculate the period of a wave is:

T = 1 / f

The frequency of a wave is:

f = ν / λ

f = 129 m/s / 2.6 m

f = 49.6 Hz

Then the period of a wave is:

T = 1 / f

T = 1 /  49.6

T = 0.020 s

Thus the period of a wave is 0.020 s.

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To calculate the work done by the pulley and the power required to lift a 25 kg mass to a height of 12 m using the pulley, we need to consider the potential energy gained by the mass and the work done by the pulley.

The potential energy gained by the mass is given by the equation mgh, where m is the mass, g is the acceleration due to gravity (9.81 m/s^2), and h is the height. Substituting the given values, we get: Potential energy gained = 25 kg × 9.81 m/s^2 × 12 m = 2943.6 J. To calculate the work done by the pulley, we need to consider the force required to lift the mass and the distance over which the force is applied. The force required to lift the mass is given by the equation F = mg, where m is the mass and g is the acceleration due to gravity. Substituting the given values, we get: Force required = 25 kg × 9.81 m/s^2 = 245.25 N. The distance over which the force is applied is equal to the distance the mass is lifted, which is 12 m. The work done by the pulley is therefore: Work done by pulley = force × distance = 245.25 N × 12 m = 2943 J. To calculate the power required, we can use the equation power = work/time. The time taken to lift the mass can be calculated using the equation h = ut + 0.5at^2, where u is the initial velocity (zero in this case), a is the acceleration due to gravity, and t is the time taken. Rearranging the equation, we get: Time taken = sqrt(2h/g) = sqrt(2 × 12 m/9.81 m/s^2) = 1.71 s. Substituting the values for work and time, we get: Power required = work/time = 2943 J/1.71 s = 1717.54 W. Therefore, the work done by the pulley is 2943 J and the power required is 1717.54 W to lift a 25 kg mass to a height of 12 m using a pulley with a radius of 20 cm and a mass of 6 kg

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The net electric force on the electron placed at x = 0.200 m is 2.67 x 10^-14 N to the right and The net electric force on the electron is again the vector sum of these two forces is 4.32x 10^-14N

1. F1 = k * (q1*qe) / r1^2

F1 = (9.0 x 10^9) * (-4.00 x 10^-9) * (-1.60 x 10^-19) / (0.200)^2

= 7.20 x 10^-14 N (to the right)

F2 = k * (q2*qe) / r2^2

F2 = (9.0 x 10^9) * (-6.50 x 10^-9) * (-1.60 x 10^-19) / (0.600)^2

= 4.53 x 10^-14 N (to the left)

The net electric force on the electron is the vector sum of these two forces:

Fnet = F1 + F2

= (7.20 x 10^-14) + (-4.53 x 10^-14)

= 2.67 x 10^-14 N (to the right)

2. F1 = 7.20 x 10^-14 N (to the right).

The electric force exerted on the electron by the -6.50 nC charge at x = 0.800 m is now given by:

F2 = k * (q2*qe) / r2^2

where r2 = 1.20 - 0.800 = 0.400 m.

F2 = (9.0 x 10^9) * (-6.50 x 10^-9) * (-1.60 x 10^-19) / (0.400)^2

= 2.88 x 10^-14 N (to the left)

The net electric force on the electron is again the vector sum of these two forces:

Fnet = F1 + F2

= (7.20 x 10^-14)+ (2.88 x 10^-14 N) = 4.32x 10^-14N

The electric force is a fundamental concept in physics that describes the attractive or repulsive interaction between electrically charged particles. This force is a fundamental force of nature, meaning that it cannot be explained in terms of other forces.

The electric force is directly proportional to the magnitude of the charges on the particles and inversely proportional to the square of the distance between them. This means that as the charges on the particles increase, the electric force between them also increases. However, as the distance between the particles increases, the electric force decreases.

The electric force plays a crucial role in a wide range of phenomena in physics, including the behavior of electrically charged particles in electric fields, the operation of electric motors and generators, and the behavior of electrically charged particles in the human body.

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The rate of acceleration if force is doubled is same, if the objects mass is doubled it is halved, if both the object mass and force are doubled the acceleration will be same , d- acceleration will be quadrupled

Newton's second law of motion states that force is equal to mass multiplied by acceleration: F = m * a, where F is the applied force, m is the object's mass, and an is the acceleration produced.

a- When the force is doubled, the acceleration doubles as well. Using the formula, we get:

F' = 2F

a' = F' / m = (2F) / m = 2F / (2m) = F / m = a

B- If the mass is doubled, the acceleration will be halved. Using the equation, we get:

m' = 2m

a' = F / m' = F / (2m) = a / 2

C- If both the force and the mass are doubled, the acceleration will remain the same. Using the equation, we get:

F' = 2F

m' = 2m

a' = F' / m' = (2F) / (2m) = F / m = a

D- If the force is doubled and the mass is halved, the acceleration will be quadrupled. Using the equation, we get:

F' = 2F

m' = m / 2

a' = F' / m' = (2F) / (m/2) = 4F / m = 4a

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The complete question is:

When a constant force is applied to an object, it accelerates at 6.0 m/s2. What will be the rate of acceleration if

the force doubled?

the object's mass doubled?

Both the force and the mass of the object are doubled?

The force is doubled, but the object's mass is cut in half?

Answer:

Explanation:

Greetings!!!

Mass(m)= 1900kg

Acceleration (a)= 6.0m/s²

Force (F)= ?

Firstly, recall Newton's second law.

Substitute known variables into the equation

Solve for Force

If you have any questions tag me on comments

Hope it helps!!!

This means that the rocket will not reach the same height as it would at a higher launch angle, and it will also cover less horizontal distance before hitting the ground.

What is Trajectory angle?

Trajectory angle refers to the angle at which an object is launched or thrown relative to the horizontal plane. It is the angle between the initial velocity vector of the object and the horizontal plane. In physics and engineering, the trajectory angle is an important parameter that determines the trajectory of a projectile or a moving object.

Lowering the angle of launch of a rocket to 45 degrees will result in a shorter and lower trajectory compared to launching the rocket at a higher angle. When the rocket is launched at a lower angle, it will have less vertical velocity and more horizontal velocity compared to a rocket launched at a higher angle.

However, launching the rocket at a lower angle can be useful in certain situations where the goal is to cover a shorter distance or to maintain a lower altitude, such as in a low-altitude reconnaissance mission or in a missile attack where the target is closer.

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The speed of the fluid near the right-hand end of the tube is approximately 10.06 m/s.

Bernoulli's equation is a fundamental principle in fluid mechanics that relates the pressure, velocity, and height of a fluid in a flow. It states that for an incompressible fluid flowing in a steady state through a pipe of varying cross-sectional area, the total energy of the fluid (consisting of pressure energy, kinetic energy, and potential energy) remains constant along any streamline of the flow. Mathematically, the equation is:

P + (1/2)ρv² + ρgh = constant

To find the speed of the fluid near the right-hand end of the tube, we can use the Bernoulli's equation, which relates the pressure and velocity of a fluid in a flow:

P₁ + (1/2)ρv₁² = P₂ + (1/2)ρv₂²

where P1 and v1 are the pressure and velocity of the fluid at the left hand end of the tube (where the pipe is wider), and P2 and v2 are the pressure and velocity at the right-hand end (where the pipe is narrower).

We can redo this equation to solve for v₂:

v₂ = sqrt(2*(P₁-P₂)/ρ + v₁²)

where sqrt denotes the square root.

Using the given values:

A₂/A₁ = 0.46

dP = 27.6 Pa

ρ = 2.93 kg/m³

We can find the pressure at the left hand end using the fact that the pressure is the same at the same height, and the fluid is incompressible, so its density is constant:

P₁ = P₂ + dP = P₂ + 27.6 Pa

The area ratio gives us:

A₂ = 0.46*A₁

Now we need to find v₁. We can use the continuity equation, which states that the mass flow rate (ρAv) is constant in an incompressible fluid:

ρ₁A₁v₁ = ρ₂A₂v₂

where ρ1 is the density of the fluid at the left hand end, which is the same as ρ₂, and A₁ and A₂ are the pipe's cross-sectional areas at the left and right ends, respectively.

Substituting A₂ = 0.46 × A₁ and simplifying, we get:

v₁ = (0.46)² × v₂

Substituting this into the Bernoulli's equation, we get:

P₁ + (1/2)ρv₁² = P₂ + (1/2)ρv₂²

Substituting P₁ = P₂ + 27.6 Pa and v₁ = (0.46)² × v₂, and solving for v₂, we get:

v₂ = √((227.6)/(0.46^2ρ) + (0.46)⁴ × v₂²/ρ)

Simplifying this equation, we get:

v₂= √((227.6)/(0.46^2ρ × (1-0.46⁴)))

Substituting the given values, we get:

v₂ = √((227.6)/(0.46²²°⁹³ × (1-0.46⁴))) = 10.06m/s

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Answer: about half of the sea ice area in the Arctic has been lost.

Explanation: The shrinking summer sea ice cover is a visible manifestation of global warming, and affects marine ecosystems, ocean circulation, and potentially weather events further south of the Arctic.

The velocity of the dodgeball after the collision is approximately 352.8 m/s.

Using the conservation of momentum principle, we can write:

m_child * 0 + m_dodgeball * v = m_child * (-4.2) + m_dodgeball * v'

Substituting the given values, we get:

0.25 kg * v = 52 kg * (-4.2 m/s) + 0.25 kg * v'

Simplifying and solving for v', we get:

v' = (0.25 kg * v + 52 kg * 4.2 m/s) / 0.25 kg

v' = 352.8 m/s

velocity is a vector quantity that describes the rate of change of an object's position over time. It is defined as the displacement (change in position) of an object divided by the time interval over which the displacement occurred. Velocity is often expressed in units of meters per second (m/s).

Velocity includes both speed and direction, so two objects can have the same speed but different velocities if they are moving in different directions. In addition to describing the motion of objects, velocity is also used to calculate other important quantities in physics, such as acceleration and momentum. It plays a crucial role in many areas of physics, from classical mechanics to relativity, and is a fundamental concept in understanding the behavior of the physical world.

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The sister of 10 N should be seated at a distance of 2 m from the pivot to balance the see-saw.

The total weight on the left side is 60 N, and on the right side is 50 N (40 N + 10 N). The two sides must be equal for the see-saw to balance, so 10 N needs to be added to the left side. The sister of 10 N should be placed 2 m away from the pivot on the left side to balance the see-saw.To balance the seesaw it is important that both forces pulling down on each side of the beam are exactly equal. This is only true if the needle is placed exactly in the middle of the candle beam. If one side is slightly longer, this would also make it heavier and it would drop down, as you might have observed.

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Answer: I believe the frequency of a wave is 66.6667 Hz :)

Explanation:

 Adding an additional lamp to a series circuit will increase the brightness of all the lamps in the circuit, and increase the current as well.

A series circuit comprises a path along which the whole current flows through each component. A parallel circuit comprises branches so that the current divides and only part of it flows through any branch.A circuit is said to be connected in series when the same current flows through all the components in the circuit. In such circuits, the current has only one path. Let us consider the household decorative string lights as an example of a series circuit.So, series circuits are also called Voltage dividers. For parallel circuits, it's the opposite, as voltage will flow the same in each path, the current get's dropped/separated for each path. For that very behaviour, these circuits are also called as Current dividers.

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Answer: its D yea

Explanation:

If the net external torque acting on the system is zero, the total angular momentum of a system remains constant, i.e. it is conserved

Demarius has gained an elevation of 233 m. Option D.

To solve this problem, we can use trigonometry. Let's call the elevation Demarius has gained "h". Then, we can use the following trigonometric relationship:

tan θ = h / d

where θ is the angle of the slope (13.5°), and d is the distance Demarius has walked along the slope (955 m).

Rearranging this equation to solve for h, we get:

h = d * tan θ

Substituting the values we know, we get:

h = 955 m * tan 13.5°

h ≈ 223 m

Therefore, Demarius has gained approximately 223 meters in elevation.

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The main differences between air and water and air and glass are their density, viscosity, compressibility, refractive index, and transparency.

Air and water fluctuate in density, viscosity, and compressibility. Air is lots much less dense than water and has a decreased viscosity, which means that it flows greater without difficulty.

Air is also a lot more compressible than water, which means that it may be compressed to a miles smaller volume than water. On the subject of air and glass, there are numerous variations as properly. Glass is stable, whilst air is gasoline.

Glass is also an awful lot denser than air and has a higher refractive index, which means that it bends mild more than air does. This is why lenses manufactured from a glass are frequently used in cameras and telescopes for consciousness mild.

Any other essential distinction between air and glass is their transparency. Air is completely obvious to see light, while glass can both be transparent or opaque depending on its composition and any impurities it may comprise.

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A charge of 100 elementary charges is equivalent to (2) 1. 60 times 10^-17 C

A single electron or proton's electric charge is referred to as an elementary charge. It is a fundamental physical constant with a magnitude of approximately 1.602 x 10-19 coulombs (C). Electric charge is quantized using the elementary charge, which is thought to be the smallest amount of electric charge that can exist in nature. The elementary charge is the same for both particles because protons and electrons have the same and opposite charges. The behaviour of atoms and molecules is greatly influenced by their elementary charge, which also determines their electronic structure and affects how they interact with other charged particles in their environment.

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The maximum speed at which the racket can move is limited by the physical ability of the player.

The speed at which a ball leaves a racket is determined by several factors, including the speed of the racket at impact, the angle of the racket face, and the properties of the ball itself.

The maximum speed at which the racket can move is limited by the physical ability of the player. A player can only swing the racket so fast before they reach their physical limits. Additionally, the angle at which the racket strikes the ball affects the ball's speed. If the racket face is angled too steeply or too shallowly, it can decrease the speed of the ball.

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Answer:

We can use the formula for the transformer voltage ratio, which states that the ratio of the number of turns in the primary coil to the number of turns in the secondary coil is equal to the ratio of the output voltage to the input voltage:

Np/Ns = Vp/Vs

where Np is the number of turns in the primary coil, Ns is the number of turns in the secondary coil, Vp is the input voltage, and Vs is the output voltage.

We know that Vp = 220 V and Vs = 140 V, and we are trying to find Ns. We also know that Np = 30, since that is the number of turns in the primary coil. Substituting these values into the formula, we get:

30/Ns = 220/140

Simplifying the right side of the equation, we get:

30/Ns = 11/7

Cross-multiplying, we get:

11Ns = 210

Dividing both sides by 11, we get:

Ns = 19

Therefore, the answer is b.) 19.

Answer:

Q. 1 - your mass will vary from planet to planet meaning it can either decrease or increase depending on the gravitational pull of the planet

Q. 2 - jupiter since it has the highest gravitational pull

Q. 3 - moon since its gravitational pull is the least but since the moon isn't a planet it would be mercury

Q. 4 - uranus has the closest gravitational pull than of earth

Q. 5 - here's my version you can write your own if u want to

Ever since I moved to saturn I've always felt bit more heavier than before it felt like my weight had significantly increased I felt a few more kgs heavier I couldn't do much since I could only stay there for a day

That's about it

Answer: Kinetic Energy

Side Note: this may not be what you were looking for but, different forces on a object depends on what kind of energy it is, say or if it is moving that means kinetic energy

An 8 GHz uniform plane wave travelling in air is represented by a magnetic field vector given in phasor form as follows H(y) = x 0. 015e^-j beta y + z 0. 03e^j(pi - beta y) mA - m^-1 . The total time-averaged power transferred to each eardrum in 1.0 second is 3.972x10^-7 J.

The magnetic field vector for the uniform plane wave can be represented as:

H(y) = x0.015e^(-jβy) + z0.03e^(j(π-βy)) mA/m

where β is the propagation constant, and has units of rad/m.

The wave frequency can be determined from the wavelength λ, which can be calculated using the propagation constant:

λ = 2π/β

The frequency can then be determined using the relation:

f = c/λ

where c is the speed of light in air, which is approximately 3x10^8 m/s.

To find β, we can equate the phase of the x-component of H(y) to the phase of the z-component of H(y):

-jβy = j(π - βy)

Solving for β, we get:

β = π/(2y)

Substituting y = 1/(2β), we get:

β = πy

Substituting this value of β in the expression for H(y), we get:

H(y) = x0.015e^(-jπy) + z0.03e^(jπy) mA/m

To find the electric field vector, we can use the relation:

E(y) = Z0H(y)

where Z0 is the impedance of free space, which has a value of approximately 377 Ω.

Substituting the values of H(y) and Z0, we get:

E(y) = x5.655e^(-jπy) + z11.31e^(jπy) mV/m

The time-averaged power density carried by the wave can be calculated using the relation:

P = 1/2Re(E(y) x H*(y))

where H*(y) is the complex conjugate of H(y).

Substituting the values of E(y) and H(y), we get:

P = 1/2(0.015)(5.655)(cos(πy) + jsin(πy)) + 1/2(0.03)(11.31)(cos(πy) - jsin(πy))

Simplifying, we get:

P = 0.236cos(πy) W/m^2

To find the total time-averaged power transferred to a surface of area A, we can integrate P over the surface:

P_total = ∫∫ P dA

Assuming the surface is perpendicular to the direction of propagation, and has a diameter of 8.4 mm, we get:

A = π(0.0042)^2 = 5.538x10^-5 m^2

Substituting the value of A and integrating P over the surface, we get:

P_total = 0.236∫∫ cos(πy) dA

P_total = 0.236cos(πy)∫∫ dA

P_total = 0.236cos(πy)(5.538x10^-5)

Substituting the value of y = 30 m, we get:

P_total = 0.236cos(πx30)(5.538x10^-5) = 3.972x10^-7 W

Therefore, the total time-averaged power transferred to each eardrum in 1.0 second is 3.972x10^-7 J.

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The guilty batter will often be removed from the game after charging the mound, though depending on the situation, there may also be a fine or suspension. Discipline for throwing a beanball may also be applied to the pitcher.

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The heat needed for the air to change from 27°C to 400°C is 291 J.

First, calculate the final volume of the air using the ideal gas law:

PV = nRT

where P is the pressure, V is the volume, n is the number of moles, R is the gas constant, and T is the temperature.

Assuming that the pressure remains constant, rearrange the ideal gas law to solve for the final volume:

V₂ = (nRT₂) / P

where T₂ is the final temperature.

Calculate the initial number of moles of air using the ideal gas law with the original conditions:

n = (PV) / RT₁

where T₁ is the initial temperature.

Substituting the given values:

n = (3.0 atm x 5860 cm3) / (0.0821 L atm/mol K x 300 K)

n = 0.72 mol

Now calculate the final volume:

V₂ = (0.72 mol x 0.0821 L atm/mol K x 673 K) / (3.0 atm)

V₂ = 13.47 L

The change in volume is therefore:

ΔV = V₂ - V₁

ΔV = 13.47 L - 5.86 L

ΔV = 7.61 L

To calculate the heat required, use the equation:

q = nCvΔT

where ΔT is the change in temperature.

Substituting the given values:

q = (0.72 mol x 0.177 cal/g °C x (400°C - 27°C))

q = 69.7 cal

Finally, convert this to joules:

q = 69.7 cal x 4.184 J/cal

q = 291 J

Therefore, the amount of heat that must be added to the air is 291 J.

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The complete question is:

For air, Cv= 0.177 cal/g.°C. Suppose that air is confined to a cylinder by a movable piston under a constant pressure of 3.0 atm. How much heat must be added to the air if its temperature is to be changed from 27°C to 400°C? The mass of air in the cylinder is 20 g, and its original volume is 5860 cm.

The biggest celestial event of the decade will likely take place on August 21 when a total solar eclipse crosses the whole continental United States from coast to coast.

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The kinetic energy of an object is the energy that is associated with its motion. The average kinetic energy of the particles that make up an object is a measure of the temperature of the object.

What is kinetic energy?

Kinetic energy is the energy that an object possesses due to its motion. Any object that is moving has kinetic energy. The amount of kinetic energy that an object has depends on its mass and its velocity. The equation for calculating the kinetic energy of an object is KE = 0.5 * m * v^2, where KE is the kinetic energy, m is the mass of the object, and v is the velocity (speed) of the object.

The correct answer is A: the average kinetic energy of the particles that make up an object.

The kinetic energy of an object is the energy that is associated with its motion. The average kinetic energy of the particles that make up an object is a measure of the temperature of the object. The higher the temperature of an object, the greater the average kinetic energy of its particles.

Option B describes potential energy, which is the energy stored in an object due to the position of its particles. This energy can be converted into kinetic energy if the object is allowed to move.

Option C describes thermal energy, which is the total energy of all the particles within an object, including both kinetic and potential energy.

Option D describes heat transfer, which is the transfer of thermal energy from one object to another due to a temperature difference.

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50J work will do to lift it the same distance

How much energy is wasted during a fall?

When an object is falling freely, its velocity rises because of the acceleration caused by gravity. In the instance of a body that is falling freely, the kinetic energy thus rises while the potential energy falls as the height of the object decreases.

When an object is descending at its terminal velocity, the force of gravity and air resistance are equal, and the object no longer accelerates. The amount of labor done is equal to the sum of the object's displacement and the gravitational force. The modification of the object's potential energy brought on by gravity can also be used to calculate it.

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