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A rock has a mass of .45 kg is dropped from a building window. The rock strikes the ground with a velocity of 25 m/s. How much potential energy did the rock have before it was dropped from the window? Assume no energy was lost to air resistance.
An aluminum ring has an inside diameter of 1.793 cm, and an iron rod has a diameter of 1.798 cm, at what common temperature will the ring just slip onto the rod
a rubber ball is dropped from a height of 2.0m. after each bounce it returns to a height of 23 its starting height.i
A 0.5 kg brick is dropped from a height of 9.0 m. It hits the ground and comes to rest. What is the magnitude of the impulse exerted by the ground on the brick
Would you expect the fragment to generate an electric fiend in this situation? Explain why or why not?
Name the two methods that will produce a spectrum from white light. Compare the methods based on the
A battery with an emf of 12.0 V shows a terminal voltage of 11.0V when operating in a circuit with two lightbulbs rated, What is the battery's internal resistance
A steel wire in a piano has a length of 0.60- m and a mass of 4.5 x10-3 kg. To what tension must this wire be stretched in order that the fundamental vibration correspond to middle C (fC = 261.6 Hz on the chromatic musical scale).
Compare their kinetic energies. If the radii of the proton's circular path is 10cm, what are the radii of the deutron's path and the alpha particle's path? u is the atomic mass unit.
A copper cylinder and a brass cylinder are stacked end to end, as in the drawing. Each cylinder has a radius of 0.30 cm. Find the amount by which the length of the stack decreases
(a) What is the total mechanical energy of the roller coaster/earth system at the 40m hilltop? (b) What is the kinetic energy of the roller coaster at the 5m dip? (c) What is the kinetic energy of the main part of the roller coaster at the 30m crest ..
Determine the value of the cutoff ratio that causes the Diesel cold ASC thermal efficiency to become zero for an engine with a 20.0 to 1 compression ratio.
The electric field in an xy plane produced by a positively charged particle is 13.7(6.9i + 6.0j) N/C at the point (3.3, 3.3) cm and 105i N/C at the point (5.0, 0) cm. What is the charge (in Coulombs) of the particle
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