A astronaut has a mass of 97.0 kg counting his suit and tools. He accidently loses his safety line while drifting in space 4.00 meters from the space shuttle. To get back, he removes a 5.3 kg tool from his belt and throws it at 16.0 m/s away from the shuttle. How fast will he move toward the shuttle? Take toward the shuttle as positive.

What is a possible result of higher air temperature caused by global warming

4r-134a enters the condenser of a residential heat pump at 800 kpa and 50°c at a rate of 0.022 kg/s and leaves at 750 kpa subcooled by 3°c. the refrigerant enters the compressor at 200 kpa superheated by 4°c determine (a) the isentropic efficiency of the compressor, (b) the rate of heat supplied to the heated room, and (c) the cop of the heat pump. also, determine (d) the cop and rate of heat supplied to the heated room if this heat pump operated on the ideal vapor-compression cycle between the pressure limits of 200 and 800 kpa. (0.757, 4.37 kw, 5.12, 6.18, 3.91 kw)

A58-kg boy swings a baseball bat, which causes a 0.140-kg baseball to move toward third base with a velocity of 38.0 m/s.