We have some gas in a container at high pressure. The volume of the container is 480 cm3
. The pressure of the gas is 2.52 × 105 Pa. We allow the gas to expand
at constant temperature until its pressure is equal to the atmospheric pressure, which at
the time is 0.857 × 105 Pa. (a) Find the work (J) done on the gas. (b) Find the change of
internal energy (J) of the gas. (c) Find the amount of heat (J) we added to the gas to
keep it at constant temperature. Be sure to include the correct signs on the answers.

Consider a file currently consisting of 200 blocks. assume that the file control block (and the index block in the case of indexed allocation) is already in memory. calculate how many disk i/o operations are required for contiguous, linked, and indexed (single-level) allocation strategies, for each of the conditions listed below. in the contiguous-allocation case, assume that there is not room to grow at the beginning but there is room to grow at the end. also assume that the block information to be added is stored in memory.