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A 1225 kg automobile starts from rest on a horizontal road and gains a speed of 83 km/h in 38 s.
(a) What is the kinetic energy of the auto at the end of the 38 s?
J
(b) What is the average power required of the car during the 38 s interval?
W
(c) What is the instantaneous power at the end of the 38 s interval, assuming that the acceleration was constant?
A metal container, which has a mass of 9.4kg contains 18kg of water. A 1.8 kg piece of the same metal, initially at a temperature of 200°C, is dropped into the water. The container and the water initially have a temperature of 14.1°C and the final..
A disk of radius 3.00 cm has a uniformly distributed charge of Q = 5.20 uC, Calculate the electric field on the perpendicular axis of disk
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The angular momentum of Earth is constant
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In a period of 1.0 s, 5.0 x10^23 nitrogen molecules strike a wall of area 7.80 cm2. If the molecules move at 270 m/s and strike wall head on in a perfectly elastic collision, find the pressure exerted on the wall. (The mass of one N2 molecule is 4..
An unstable particle is at rest and suddenly decays into two fragments. No external forces act on the particle or its fragments. What is the speed of the less massive fragment
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