Engineers are designing a cylindrical air tank and are trying to determine the dimensions of the tank. the proposed material for the tank is rated to withstand an absolute pressure of 20 mpa at a temperature of 10˚c. if the tank is sized to have a diameter of 200 mm and hold 4.64 kg of air, what must the length of the tank be?

According to social exchange theory, altruistic behaviors benefit the individual who performs them.

5g of ammonium nitrate was dissolved in 60g of water in an insulated container. the temperature at the start of the reaction was 23.0°c and at the end it was 19.0°c. calculate the energy absorbed by the reaction.

Because air contracts as it cools, the air pressure inside a freezer is typically lower than on the outside. why do ice cubes inside a freezer tend to shrink over time? a. the ice dissolves oxygen from the air, forming a denser crystalline matrix.b. the ice reacts chemically with carbon dioxide in the air, forming gaseous carbon compounds.c. the ice melts, and then the liquid freezes as ice crystals on the bottom of the freezer.d. the ice sublimes, and then the water vapor deposits as ice crystals on the sides of the freezer.