Answer:
a. time of flight = 4.285 s
b. horizontal distance reached = 214.25m
c. final velocity = 65.3m/s, at 40° downwards
Explanation:
This is a projectile motion question.
Things to note, in all projectile motion questions:
in the horizontal component, velocity is always constant. There is no horizontal acceleration. at maximum height reached by the object, vertical velocity = zerothe only vertical acceleration, is acceleration due to gravity = 9.8 m/s²vertical displacement, is initial height minus final height. ΔSIn projectile motion questions, we will use the three equations of motion:
[tex]v=u+at\\v^2=u^2+2as\\s=ut+\frac{1}{2}at^2[/tex]
Thus we can adjust our equations for the x - component:
[tex]v=u\\s=ut[/tex], since acceleration = 0
For the y - component:
[tex]v=u-gt\\v^2=u^2-2gs\\s=ut-\frac{1}{2}gt^2[/tex], since acceleration = gravity (9.8 m/s²), downwards.
Now, with our question, we can note: u(x) = 50m/s, and u(y) = 0, since, initially, only horizontal motion. Also, s(y) = - 90m.
(a) After how many seconds will it strike the plain at the foot of the cliff?
In this question, we are asked to find time of flight, 't'. As we have s(y), u(y), and g, we can use the third equation, [tex]s=ut-\frac{1}{2}gt^2[/tex] to find t.
Since u=0, thus, - 90 = -1/2×9.8×t². solving this algebraically, therefore, time of flight = 4.285 s.
(b) At what distance from the foot of the cliff will it strike?
Now, we need to find the horizontal distance or range. All we can use to do this is s = ut. Since we know that u=50m/s, and t=4.285s, this will be easy. s = (50)(4.285) = 214.25 m.
Therefore, horizontal distance reached = 214.25m.
(c) With what velocity will it strike the ground?
In this part, we need to find final velocity. Final velocity = the resultant vector of both the x and y velocity components. [tex]v=\sqrt{(v_x)^2+(v_y)^2}[/tex].
Since horizontal velocity is constant, u = v, and therefore, v(x) = 50m/s.
For vertical velocity, we can use [tex]v^2=u^2-2gs[/tex]. u(x) = 0, and s(y) = -90m.
Therefore, v² = -2(9.8)(-90). final vertical velocity is thus 42m/s.
Now final velocity = √(50² + 42²) ≈ 65.3 m/s.
Lastly, we need to remember to calculate direction, since velocity is a vector quantity. the direction of velocity (θ) [tex]=tan^{-1}(\frac{v_y}{v_x})[/tex]
Therefore, θ = 40°.
Therefore, final velocity = 65.3m/s, at 40° downwards.
Explain the difference between the everyday meaning of the phrase “conserving energy” and what scientists mean by the phrase “conservation of energy”
On August 21, 2017, the United States experienced the first coast to coast solar eclipse since 1918. How were the sun, moon, and Earth arranged during this eclipse?
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.
Arrangement This is the first time since 1918 that the US visit will experience a total solar eclipse, which is brought on by the Moon moving in front of the Sun. In order to see the Sun's disc totally covered by the Moon, people are swarming to the cities that are closest to the eclipse's path. Even if you're not in the path, the US will still put on a spectacular show since on August 21, the majority of the Sun will be hidden in clouds in every state in the lower.For more information on solar eclipse kindly visit to
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A lorry of mass 8 000 kg travelling at 20 m s¹ collides with a car of mass 1 000 kg that parked at the side of the road. After the collision, the lorry and the car move together. Calculate the velocity after the collision.
Answer:
Explanation:
Before the collision, the lorry has a momentum of:
p1 = m1v1 = 8000 kg * 20 m/s = 160000 kgm/s
where m1 is the mass of the lorry and v1 is its velocity.
The car is initially at rest, so its momentum is:
p2 = m2*v2 = 0
where m2 is the mass of the car and v2 is its velocity.
After the collision, the two vehicles move together with a common velocity v. The total momentum of the system after the collision is:
p = (m1 + m2)*v
where m1 + m2 is the total mass of the system.
By the law of conservation of momentum, the total momentum before and after the collision is the same. So we have:
p1 + p2 = p
Substituting the values we have:
160000 kg*m/s + 0 = (8000 kg + 1000 kg)*v
Simplifying:
v = (160000 kg*m/s) / (9000 kg)
v = 17.78 m/s
Therefore, the velocity of the lorry and car together after the collision is 17.78 m/s.
A pulley has a radius of 20 cm and a mass of 6 kg. Find the work and power if the 25kg mass is raised to 12m
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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A system consisting of several objects attached to each other. If the net external torque acting on the system is zero, then there will be
a) a change in the system's moment of inertia
b) no change in the system's moment of inertia
c) a change in the system's angular momentum about its center of mass
d) no change in the system's angular momentum about its center of mass
I personally think its D. Thanks
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
PLEASE HELP!! HURRYY
If a step down transformer has 220 V coming into the primary coil of 30 turns and 140 V is coming out of the second coil, how many turns in are in the secondary coil?
a.) 30
b.) 19
c.) 0.05
d.) 7
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.
How does changing the charge’s value influence the force between the two charges?
As the value of charge 1 __________, the value of the force ___________.
decreases; decreases
increases; decreases
increases; does not change
decreases; does not change
Answer:
the answer is decreases,decreases
What difference do you notice between air and water and air and glass
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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For air, C,-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 adde quticmtucs
The heat needed for the air to change from 27°C to 400°C is 291 J.
How to calculate specific heat capacity?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.
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 Find beta and frequency. Find the corresponding electric field vector in phasor-form. Find the total time average power density carried by this wire
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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What will happen to the brightness of the lamps and the current in a series series circuit if an additional app is added
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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1 point
A swimmer can swim at a speed of 2.2 m/s for 372 seconds. What distance will she cover in that time?
Answer with zero decimal places. (round up to nearest whole number)
The swimmer will cover a distance of 818.4 meters in 372 seconds, swimming at speed of 2.2 m/s.
What is speed?The magnitude of change of its position over time or the magnitude of change of its position per unit of time is called speed.
We use this formula: distance = speed x time
speed is the swimmer's speed, and time is the time she swims for.
Substituting the given values, we get: distance = 2.2 m/s x 372 s
Calculating the product, we obtain:
distance = 818.4 meters
Therefore, the swimmer will cover a distance of 818.4 meters in 372 seconds, swimming at a speed of 2.2 m/s.
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A 52 kg child is struck in the face by a 0. 25 kg dodgeball, as he is standing against a wall. If the child is knocked backward at 4. 2 m/s, what is the velocity of the dodgeball? (This answer is going to seem extreme)
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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If 450 J of work are needed to move a crate a vertical distance of 11 m, what is the weight of the crate?
The weight of the crate moved vertically is 40.9 Newton.
What is the weight of the crate?To solve this problem, we can use the formula for work done, which is:
Work done = force × displacement
Where force is the weight of the crate, distance is the vertical distance moved.
We can rearrange the formula to solve for the weight of the crate:
Force = work / displacement
Given that;
Work done = 450 JDisplacement = 11 m.Plugging in the values, we get:
Force = work / displacement
Force = 450 J / (11 m )
Force = 40.9 N
Therefore, the weight of the crate is 40.9 N.
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What would be the likeliest effect of moving the pitchers mound in the MLB closer so that it’s 50 feet from home plate?
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.
Pitchers There were worries that the game was unfairly rigged in favor of the pitcher and was therefore no longer entertaining to watch. In order to assist the batters, the pitching mound was dropped from 15 inches to 10 inches, and the strike zone was restored to its 1961 dimensions.Simple logic underlies the decision to relocate the mound: Pitchers in the modern day stand significantly taller and throw much harder than pitchers in the nineteenth century. As a result, today's batters have less time to react to pitches that are released closer to home plate and move faster toward their targets.For more information on MLB pitchers kindly visit to
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14. What force is required to
accelerate a car with a mass of 1900
kg at a rate of 6.0 m/s/s?
Answer:
Force (F)= 1.14×10⁴NExplanation:
Greetings!!!
Given values:-Mass(m)= 1900kg
Acceleration (a)= 6.0m/s²
Required values :-Force (F)= ?
Solution :-Firstly, recall Newton's second law.
F= maSubstitute known variables into the equation
F= (1900)×(6.0)Solve for Force
F= 1.14×10⁴NIf you have any questions tag me on comments
Hope it helps!!!
what happened to the arctic ocean during the past 40 years
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.
If I do 100 Joules of work to lift my backpack, then half of everything falls out so that I can lift it using half the force, how much work will I do to lift it the same distance?
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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How does changing the distance influence the force between the two charges?
As the distance __________, the absolute value of the force ___________.
increases; increases
increases; decreases
increases; does not change
decreases; does not change
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.
Can someone help please
Identify What limits the speed at which the ball will leave the racket?
The maximum speed at which the racket can move is limited by the physical ability of the player.
What limits the speed at which the ball will leave the racket?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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-4. 00 nC point charge is at the origin, and a second -6. 50 nC point charge is on the x-axis at x = 0. 800 m. 1. Find the net electric force that the two charges would exert on an electron placed at point on the x-axis at x = 0. 200 m. 2. Find the net electric force that the two charges would exert on an electron placed at point on the x-axis at x = 1. 20 m
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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Heat is defined as
A.
the average kinetic energy of the particles that make up an object.
B.
the energy stored in an object due to the position of its particles.
C.
the sum total of all the kinetic energy of the particles within an object.
D.
the amount of thermal energy transferred from one object to another.
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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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A charge of 100 elementary charges is equivalent to (1) 1. 60 times 10^-21 C (2) 1. 60 times 10^-17 C (3) 6. 25 times 10^16 C (4) 6. 25 times 10^20 C
A charge of 100 elementary charges is equivalent to (2) 1. 60 times 10^-17 C
What is the charge of one elementary charge?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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Which object would have the greatest kinetic energy? *
A car driving down a hill at a speed of 40 m/s A person walking on the street at 2 m/s A ball rolling across the field at 5m/s A leaf falling at 10 m/s
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Weight (N) mass (kg) x gravitational pull (N/kg)
1. What happens to your mass as you move from one planet to another?
2. On which planet did you weigh the most?
3. On which planet did you weigh the least?
4. On which planet was your weight most similar to your weight on Earth?
5. Imagine you went to Saturn. Write a short story about a day in your life there. Include details about how your different weight affected what you did?
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
Fill in the blanks in the following paragraph to correctly identify four principles of the second law of thermodynamics. (1 point) Change in the internal energy of the system= -130 J Isobaric process is a thermodynamic process that takes place under constant pressure. Temperature, volume, and internal energy are not constant in this process, even though the pressure is constant. ☝️ An adiabatic process is defined as a process in which no heat transfer takes place. This does not mean that the temperature is constant, but rather that no heat is transferred into or out from the system. Heat naturally flows from an object that has a _______________ temperature to an object that has a _______________ temperature. Heat can be made to flow in the reverse direction if _______________ is done. A machine can never have an efficiency of _______________. This means that heat energy can never be fully converted into _______________ energy.
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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A constant force is applied to an object, causing the object to accelerate at 6. 00 m/s2. What will the acceleration be if
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?
The horizontal constricted pipe illustrated in the figure (a Venturi tube), can be used to measure flow velocities in an incompressible fluid. The ratio for the cross section areas of A2/A1 =0. 46, the difference in the pressure is Pi - P2 = dP = 27. 6 Pa, and the density of the fluid is 2. 93 kg/m. Find the speed of the fluid near the right hand end of the tube (i. E. , find v2
The speed of the fluid near the right-hand end of the tube is approximately 10.06 m/s.
What is Bernoulli's equation?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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Moving objects have energy in what kind of energy store?
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