According to kinetic theory, the temperature of a gas is determined by the average kinetic energy of its molecules. What would happen if the gas were in a container that was moving with a high velocity?
What will be an ideal response?
The important factor is the kinetic energy of the molecules relative to the container; if the relative energy is low, the temperature is low, if it is high, then the temperature is high.
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A 3.10-eV electron is incident on a 0.40-nm barrier that is 5.67 eV high. What is the probability that this electron will tunnel through the barrier?
(1 eV = 1.60 × 10-19 J, mel = 9.11 × 10-31 kg, h = 1.055 × 10-34 J ? s, h = 6.626 × 10-34 J ? s) A) 1.4 × 10-3 B) 9.0 × 10-4 C) 1.0 × 10-3 D) 1.5 × 10-3 E) 1.2 × 10-3
Two vehicles with equal magnitudes of momentum traveling at right angles to each other undergo an inelastic collision. The magnitude of momentum for the combined wreck is
A) the same as the magnitude of momentum of either car before collision. B) less than the magnitude of momentum of either car before collision. C) greater than the magnitude of momentum of either car before collision. D) none of the above
When using different points in the Earth's orbit as a baseline for a parallax experiment it is best to do the observations:
A. 1 day apart. B. 6 months apart. C. 1 month apart. D. 1 year apart. E. 2 years apart.
A 1-centimeter cubed sugar cube scaled up by a factor of 10 has a total surface area of
A) 60 cm2. B) 600 cm2. C) 6000 cm2. D) none of the above