e A certain car can accelerate from rest to thespeed v in T seconds. If the power output of the car remains constant, (a) how much time does it take for the car to accelerate fromv to 2v? (b) How fast is the car moving at 2T seconds after starting?

Q: ind the useful power output (in W) of an elevator motor that lifts a 2400 kg load a height of 35.0 m…

A:

Q: 9. A 40 kg roller coaster car starts from rest at location A. assuming negligible energy losses to…

A: Law of Conservation of energy tells us that total energy assosiated by a object remains same in case…

Q: The work performed as a function of time for a certain process is given by: W = at³, where a = 2…

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Q: Work and Energy 7. A 5000kg elevator starts from rest accelerates uniformly to a constant speed of…

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Q: A certain rain cloud at an altitude of 2.04 km contains 3.20 x 10' kg of water vapor. How long would…

A:

Q: You are trying to move a crate with mass 22 kg from A to B onsite. You don't know the value of h,…

A:

Q: The electric motor of a model train accelerates the train from rest to 0.765 m/s in 24.5 ms. The…

A: a)power is defined as the work per unit time.work is nothing but change in kinetic energy.in this…

Q: A certain rain cloud at an altitude of 2.10 km contains 3.20 107 kg of water vapor. How long would…

A:

Q: QT1. The kinetio energy of a body changes from 12 J to 00 J due to the action of a force of 5 N on…

A: From Law of Energy Conservation:   Work Done = Change in Kinetic Energy = Final kinetic Energy -…

Q: 4. A 1,380kg sports car accelerates from zero to 35 m/s in 8.0 s. Assume in accelerates at a…

A: Average power is given by   Instantaneous power is given by P = F × V Where  F = Force applied on…

Q: Part i Consider the system of two blocks shown in (Eigure 1). The blocks are released from rest.…

A: Given The tension in the light rope = 35 Nmass m1= 8 kgmass m2= 6 kg

Q: You push a supermarket cart 17 m at constant speed on level ground, against a 20.7N frictional…

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Q: Two Engines, A and B, can do the same amount of work. However, A has a greater power rating than B.…

A: Solution: Work is the amount of energy transferred in a process when an external force is applied.…

Q: GPE - mgh 1 Ccaletate the potential energy, hinetic energy, mechanical energy, velocity, and height…

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Q: When we are interested in biological energy resources and metabolism, we need to know, among other…

A: The potential of a mass M at height h from the earth ground is U = Mghwhere, M is the mass…

Q: A force is called a conservative force if: a) The work done by the force is independent of the path.…

A: Forces are classified as conservative forces and non-conservative forces. A force is defined as…

Q: The velocity of an object with mass m-2kg is given as a function of time: V= (2t +1)2+(t) where V is…

A:

Q: A 1200 kg car starts from rest and travels 100 m in a time of 10 seconds. m A) What is the…

A:

Q: pa 21° incline w

A: Given: Mass of bundle is 6.2 Kg Incline is 21o Kinetic energy is 144 J Kinetic friction coefficient…

Q: A 1000 kg roller coaster car stays at point A of height H=50.0m and slides down the smooth track and…

A:

Q: The work (Jili) done by any nonconservative Lailas i öä) on a particle moving through an losed path…

A: Work done = force ×displacement

Q: The dominant form of drag experienced by vehicles bikes, cars, planes, etc.) at operating speeds is…

A:

Q: Jacob is riding his bike down a tall hill. At the top of the hill, he has 2800J of potential energy.…

A: Whether the total amount of energy at the top is equal to the total amount of energy at the bottom…

Q: Mark and David are loading identical cement blocks onto David's pickup truck. Mark lifts his block…

A: Mark and wood done the same amount of work

Q: W A 70-kg base runner begins his slide into second base when he is moving at a speed of 4.0 m/s. The…

A: Given:  mass,  m = 70 kg  u = 40 m/s  v = 0  coefficient of friction = 0.7

Q: An 83kg man eats a banana of energy content 1.00x10^3 kcal. If all of the energy from the banana is…

A: Given that,Mass : m= 83 (kg)Energy : E =1×103 (kcal)Velocity  : v0 = 0 (m/sec)Here we need to find…

Q: A bungee jumper has a mass of 74.3 kg and falls a distance of 113 m before the bungee catches and…

A:

Q: Lli 5 In unloading grain from the hold of a ship, an elevator lifts the grain through a distance of…

A:

Q: 3. A record was set for stair climbing when a man ran up the 2500 steps of the Empire State Building…

A:

Q: Find the value of k in the network in Fig. P2.129 such that the power supplied by the 8-A source is…

A: Given Power supplied by 8A source is 106 W A1 = 8 AR1 = 2 ΩR2 = 4 ΩR3 = 6 ΩR4 = 3 ΩR5 = 10 Ω Find…

Q: Boxes A and B in the figure have masses of 10.0 kg and 2.0 kg, respectively. The two boxes are…

A:

Q: Which of the following statements are true? If you apply a force to a moving object, you are doing…

A: To check which of the following statements are true.

Q: lides down a pole with constant speed. What can

A: A firefighter slides down a pole with constant speed

Q: ric power companies use water to store energy. umped from a low reservoir to a high reservoir. he…

A: Given information: Here, P is the power, h is the height and ρ is the water’s density.

Q: A horse pulls a carriage a distance of 76.5 m, Find the force applied if the horse did 5000 J of…

A: Given data: Distance covered is, d=76.5 m. Work done by horse is, W=5000 J.

Q: If an object is moving at certain speed, it will have Kinetic Energy. If the object's speed is…

A: Given data:  Speed of the object = v New speed of the object (v1) = 3v Required: The new kinetic…

Q: From the figure, the system star ts at rest with the spring unextended. Taking m=0.10, when the…

A:

Q: Q9. A 100 kW wind turbine operates at peak efficiency when the wind blows at 15.0 m/s At this rate,…

A:

Q: 68. What is the cost of operating a 3.00-W electric clock for a year if the cost of electricity is…

A: Given data: Power (P) = 3.00 W Time (t) = 1 year Cost of electricity = $0.0900 per kW.h Required:…

Q: A particle moves along the ar-axis while acted on by a single conservative force parallel to the…

A: The potential energy graph is given . To find = a) Direction of force on particle , when it is at…

Q: Wile E. Coyote waits for the roadrunner on a cliff 7.03 m above the valley to drop a 3250 g boulder.…

A: Given: cliff height h= 7.03 m  Mass m = 3250 g = 3.25 kg And g = 9.8 m/s2

Q: A car with mass of 1138 kg accelerates from 0 m/s to 40.0 m/s in 10.0 s. Ingnore air resistance. The…

A: Solution:   Given Values, Mass (m)=1138 Kginitial velocity(u)=0 m/sfinal velocity(v)=40…

Instantaneous Power

Power is defined in physics as the amount of energy transmitted or transformed per unit time. The watt is the unit of electricity in the International System of Units, equivalent to one joule per second.