How many electrons pass through a 20-? resistor in 10 min if there is a potential drop of 30 volts across it?
a. 5.6 × 10^21
b. 7.5 × 10^21
c. 9.4 × 10^21
d. 1.1 × 10^21
e. 3.8 × 10^21
a
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Which of the following is not a characteristic of the inner planets?
A) They all have solid, rocky surfaces. B) Their orbits are relatively closely spaced. C) They have very few, if any, satellites. D) They all have substantial atmospheres. E) They are relatively smaller than the outer planets.
Hydrogen and oxygen molecules in a sample of gas have the same temperature. This means the hydrogen molecules, on average, have the same
A) speed and the same kinetic energy. B) speed, but more kinetic energy. C) speed, but less kinetic energy. D) kinetic energy, but more speed. E) kinetic energy, but less speed.
What would be the greatest effect of the finite size of molecules on the ideal gas law?
A) At low densities, the pressure would be less than that predicted by the ideal gas law. B) At high densities, the pressure would be less than that predicted by the ideal gas law. C) At high densities, the pressure would be greater than that predicted by the ideal gas law. D) At low densities, the pressure would be higher than that predicted by the ideal gas law. E) There is no effect.
What would prevent free convection at very low Grashof numbers in an enclosed space?
What will be an ideal response?