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Answer the following statement true (T) or false (F)

True

Physics & Space Science

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Which of the following is NOT a true statement about the relationship between the thermal expansion of a solid and the potential energy of an ion in a solid?

a. The potential energy curve for an ion in a solid is not symmetric about the minimum energy point. b. The ions within the solid both attract and repel other ions in the solid. c. As the temperature increases from zero, ions begin to oscillate with potential energy like that of a simple-harmonic oscillator. d. The Pauli exclusion principle provides some repulsion for electron shell overlap.

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Physics & Space Science

As a high-altitude balloon sinks lower into the atmosphere, it undergoes a decrease in

A) volume. B) density. C) weight. D) mass. E) none of the above

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Physics & Space Science

Jack rides a bicycle northward at 12 mph. Jill rides southward on the same road at 12 mph. As they pass each other

A) their speeds are identical and their velocities are identical. B) their speeds are identical but their velocities are different. C) their speeds are different but their velocities are identical. D) their speeds are different and their velocities are different. E) theoretical physics predicts, surprisingly enough, that they will turn into giant frogs.

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Physics & Space Science

The rms velocity of a He molecule in helium gas with a temperature of 20 is 1,352 m/s. What is the rms velocity of the molecule if the temperature of the gas is tripled?

A. 2,340 m/s B. 3,640 m/s C. 3,980 m/s D. 4,120 m/s E. 4,500 m/s

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Physics & Space Science