In a given reversible process, the temperature of an ideal gas is kept constant as the gas is compressed to a smaller volume. Which of the following statements is true regarding this process?
A. The gas must absorb heat from its surroundings.
B. The gas must release heat to its surroundings.
C. The pressure of the gas also stays constant.
D. The process is adiabatic.

Scientists follow specific processes in order to determine valid explanations and conclusions from observations. david observed strange lights in the sky above his home outside of roswell, new mexico. the only explanation that makes sense to him is that there are ufos in the area. what should david do next to verify his explanation?

Avertical clean glass piezometer tube has an inside diameter of d = 1 mm and is used to measure pressure in a horizontal pipe carrying water as shown. due to pressure in the pipe, the water at 20c rises into the tube to a height h. if the water pressure in the pipe is p = 500 pa gauge, estimate the height h: (a) without considering surface tension (b) with surface tension (capillary) effects. the contact angle  can be assumed at 30 deg

A1.5m wire carries a 2 a current when a potential difference of 52 v is applied. what is the resistance of the wire?