Find the momentum of an 80 kg student that rides a skateboard at the rate of 2 m s . a) 0.25 kgm s b) 16 kgm s eliminate c) 40 kgm s d) 160 kgm s

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.

One number is said to be an "order of magnitude" larger than another number if choose one: a. it is 10 times larger. b. it is 5 times larger. c. it is 3 times larger. d. it is 100 times larger. e. it is 2 times larger.

Which of the following is another term for a planned economy