A block is pushed against a massless spring, with k = 200 N/m, which is attached to a wall. The spring is compressed 0.04 m before the block is released. As the spring expands back to its original length, what will be the change in kinetic energy of the block?

Astone dropped into a well is heard to strike the water after 8seconds. find the depth of the well if the velocity of sound is 350m/s

In physics the desire of an object to keep doing what it is doing is termed?

Atwo-stage air compressor operates at steady state, compression 10m^3/min of air from 100 kpa and 300k to 1200 kpa. an intercooler between the two stages cools the air to 300k at a constant pressure of 350 kpa. the compression processes are isentropic. a) calculate the power required to run the compressor, in kw b) compare the result to the power required for isentropic compression from the same inlet state to the same final pressure.