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Please help me solve this problem: The electric motor of a model train accelerates the train from rest to 0.600 m/s in 33.0 ms. The total mass of the train is 820 g. Find the average power delivered to the train during its acceleration.
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A moving particle encounters an external electric field that decreases its kinetic energy from 8650 eV to 6910 eV as the particle moves from position A to position B. The electric potential at A is -56.5 V, and the electric potential at B is +28.1..
The work done in accelerating a flywheel from rest to an angular speed of 14.8 revolutions per second is 12.4 kJ. What is the moment of inertia of the flywheel
assume that the mass moves in a circle at constant speed, and that the string makes an angle theta = 20° with the vertical. How long does it take the mass to create one complete revolution.
A rope of negligible mass is wrapped around a 225 kg solid cylinder of radius 0.40 m. The cylinder is suspended some meters off the ground with its axis oriented horizontally, and turns on that axis without friction.
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An object falls off of a pier and into the ocean (sea water) where it displaces a total volume of 2.2 cubic meters of sea water. What is the buoyant force acting on the object in newtons
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A loaded ore car has a mass of 950 kg and rolls on rails with negligible friction. It starts from rest and is pulled up a mine shaft by a cable connected to a winch, What maximum power must the motor provide
We have some air in a cylinder like that in the figure. Assume that air is an ideal diatomic gas. The diameter of the cylinder is 5.4 cm. Find the amount of hear that was put into air
A photon with an initial wavelength of 1.390Ã-10-11 m Compton scatters from an electron which is initially at rest. compute the kinetic energy of the scattered electron
A 1.02 kg mass is suspended from a wire changes the length of the wire by 1.20 mm. find the stress in the wire due to the suspended mass
A charge of -250e is uniformly spread through the volume of a sphere of radius 2.00 cm. What is the volume charge density in that sphere
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