A snorkeling vest is an inflatable bag draped around the diver’s neck and strapped to his chest. It is used to adjust the diver’s buoyancy to be neutral so that he doesn’t automatically rise or sink. If the vest contains 9100 ml of air at 1.0 atm when he is at the surface, what volume will the air in his vest occupy when he is swimming near the bottom (where pressure on the vest is 2.3 atm)? Assume that air temperature in the vest doesn’t change.

1. consider the case in which air fills air shocks on a truck trailer. the pressure in the shocks is 2 mpa. the temperature is 300 k. the diameter of the shock piston is 10 cm and the initial length of the cylindrical cavity containing the compressed air is 40 cm. a. the truck is gradually loaded over a period of a day in a static setting. the temperature is held constant for the atmosphere and thus for the gas shock. calculate the compressibility of the air in the shock for this condition when the truck is initially being loaded. b. if the shocks were loaded in a dynamic setting by driving over bumps, what would be the compressibility? state your assumption. c. what is the initial load on the shock if the shock is in an atmospheric 100 kpa? d. if the shock is compressed using the process described in part a, and the air shock compressed air cavity length decreases to 20 cm, what is the additional load applied to the shock?

The pressure proportional to the area a- inversely b- directly c- increase d-decrease

Two point charges are on the y axis. a 3.90-µc charge is located at y = 1.25 cm, and a -2.4-µc charge is located at y = −1.80 cm. (a) find the total electric potential at the origin. v (b) find the total electric potential at the point whose coordinates are (1.50 cm, 0). v