A5 pound object is moving horizontally with a speed of 15m/s. How much force is needed to keep the object moving at 15m/s in the same direction? Explain WHY. You can give your answer as a relative estimate (ex: a small
amount...)

The current in a hair dryer measures 11 amps. the resistance of the hair dryer is 12 ohms. what is the voltage?unit:

Could someone me find the answer to this problem.

Arigid tank is divided into two equal parts by a partition. one part of the tank contains 3 kg of compressed liquid water at 400 kpa and 60°c while the other part is evacuated. the partition is now removed, and the water expands to fill the entire tank. determine the entropy change of water during this process, if the final pressure in the tank is 40 kpa. use steam tables.