Duff states that equal masses of all substances have equal changes in internal energy when they have equal changes in temperature. Javan states that the change in internal energy is equal to a constant times the change in temperature for every DT, no matter how large or how small DT is, but that the constant is different for different substances. Which one, if either, is correct?
a. Neither, because the specific heat depends on the substance and may vary with temperature. b. Neither, because a change of state may involve release or absorption of latent heat.
c. Neither because a substance may do work during a temperature change. d. All of the statements above are correct.
e. Only statements (a) and (b) are correct.
D
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Explain how the age of a rock can be determined by radiometric dating
What will be an ideal response?
In the ______________ phase, ionic compounds conduct electricity
Fill in the blank(s) with correct word
Exhibit 15-1
A dictator has built a bunker for his use in emergencies. Its dimensions are shown below. When it floods to ground level during a tropical storm, air is trapped above the dashed line in the bunker.
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Use this exhibit to answer the following question(s).
Refer to Exhibit 15-1. The absolute pressure at point A, in Pa, is
A. 3.92 × 105. B. 4.90 × 105. C. 5.39 × 105. D. 5.88 × 105. E. 6.89 × 105.
You listen to a live orchestra concert from a cheap seat far away, high up in the balcony. The music seems to be a little out of sync with the conductor's beat. Why?
a. The musicians are paying no attention to the conductor. b. You are noticing a time lag due to the finite speed of sound. c. The orchestra is not very good. d. The viola section is dragging.