Suppose that we have two containers, one holding N molecules of helium gas, and one holding N/2 molecules of oxygen gas. Both are initially at room temperature. We then add the same amount of energy to each gas. Which is hotter at the end?
A. The helium
B. The oxygen
C. Both have about the same temperature.
D. One cannot say without measuring.
B. The oxygen
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A 33 mH inductor has a current going through it that is increasing at a rate of 2.3 A/s. What is the magnitude of the induced emf in this coil?
A. 33 mV B. 76 mV C. 13 mV D. 95 mV E. 2.5 V
Molar Specific Heats: A sample of ideal monatomic gas is cooled by 50.0 C° at constant volume by removing 831 J of energy from it. How many moles of gas are in the sample? (R = 8.31 J/mol ? K)
A. 2.50 mol B. 1.50 mol C. 1.33 mol D. 1.00 mol
Which of the following energy forms is associated with an object in motion?
a. potential energy b. elastic potential energy c. nonmechanical energy d. kinetic energy
Today most scientists favor the capture theory of the Moon's origin, since it would explain why the Moon still orbits in the ecliptic plane, as do other planets
Indicate whether the statement is true or false