Asap through which medium will sound waves travel the slowest? a. pool b. helium filled balloon c. steel pipe d. wooden table

What is a neurotransmitter involved in mood reward, addiction, and motor behaviors?

If jerome is swinging on a rope and transferring energy from gravitational potential energy to kinetic energy, is being done.

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.