In a given reversible process, the temperature of an ideal gas is kept constant as the gas is compressed to a smaller volume. Which one of the following statements about the gas is correct?
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.
E) It is impossible to predict on the basis of this data.
Question 2
A water tank is filled to a depth of 10 m, and the bottom of the tank is 20 m above ground. A water-filled hose that is 2.0 cm in diameter extends from the bottom of the tank to the ground, but no water is flowing in this hose.
The water pressure at ground level in the hose is closest to which of the following values? The density of water is 1000 kg/m3. A) 3.9 105 N/m2
B) 2.0 104 N/m2
C) 9.2 N/m2
D) The question cannot be answered because the cross sectional area of the tank is needed.
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