A 0.143 kg baseball leaves a pitcher's hand at a speed of 27.5 m/s . You may want to review (Pages 188 - 192) . For related problem-solving tips and strategies, you may want to view a Video Tutor Solution of Using work and energy to calculate speed. Part A If air drag is negligible, how much work has the pitcher done on the ball by throwing it?

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.

How much energy must a refrigerator absorb from 225 g of water so that the temperature of the water will drop from 35°c to 5°c

Give an example of a collision in real life. use the law of conservation of energy to describe the transfer of momentum. be sure and discuss the momentum before and after the collision occurs. you will need at least 3 sentences to thoroughly answer this question.