Question

When the temperature of a certain solid, rectangular object increases by Delta T, the length of one side of the object increases by 0.010% = 1.0 10^-4 of the original length. The increase in volume of the object due to this temperature increase is A. 0.01% = 1.0 10^-4 of the original volume. B. (0.010)^3 % = 0.0000010% = 1.0 10^-4 of the original volume. C. (1.0 10^-4)^3 = 0.0000000001% = 1.0 10^-12 of the original volume. D. 0.030% = 3.0 10^-4 of the original volume. E. Not enough information is given to decide. When you first step out of a swimming pool on a warm day, you feel cool. This is due primarily to A. conduction. B. convection. C. radiation. D. two of A, B, and C being equally important. E. all three of A, B, and C being equally important. This p-V diagram shows three possible states of a certain amount of an ideal gas. Which state is at the highest temperature? A. state #1 B. state #2 C. state #3 D. Two of these are tied for highest temperature E. All three of these are at the same temperature Consider two specimens of ideal gas at the same temperature. The molecules in specimen #1 have greater molar mass than the molecules in specimen #2. How do the rms speed of molecules (v_rms) and the average translational kinetic energy per molecule (KE) compare m the two specimens? A. v_rms and KE are both greater in specimen #2. B. v_rms is greater in specimen #2: KE is the same in both specimens. C. v_rms is greater in specimen #2: KE is greater in specimen #1. D. v_rms and KE are the same in both specimens. E. None of the above b correct. You have 1.00 mol of an ideal monatomic gas and 1.00 mol of an ideal diatomic gas whose molecules can rotate. Initially both gases are at room temperature. If the same amount of heat flows into each gas, which gas will undergo the greatest increase in temperature? A. the monatomic gas B. the diatomic gas C. Both will undergo the same temperature change. D. The answer depends on the molar masses of the gases. E. The answer depends on whether or not the diatomic molecules can also vibrate. The molar beat capacity at constant volume of diatomic hydrogen gas (H_2) is 5R/2 at 500 K but only 3R/2 at 50 K. Why is this? A. At 500 K the molecules can vibrate, while at 50 K they cannot. B. At 500 K the molecules cannot vibrate, while at 50 K they can. C. At 500 K the molecules can rotate, while at 50 K they cannot. D. At 500 K the molecules cannot rotate, while at 50 K they can. E. At 500 K the molecules can both vibrate and rotate, while at 50 K they cannot.

Answer 1