Energy Levels: What is the energy required to remove the electron from a hydrogen atom in the n = 11 state?
A. 0.112 eV
B. 1.24 eV
C. 13.5 eV
D. 12.4 eV
E. 0.141 eV
Answer: A
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Find the change in entropy (in J/K) when 5.00 moles of an ideal monatomic gas are allowed to expand isobarically from an initial volume of 20 cm3 to a final volume of 100 cm3.
A. 167 B. 100 C. 67 D. 52 E. 152
A. Bulb A glows but bulb B goes out. B. Bulb B glows but bulb A goes out. C. Both bulbs continue to glow. D. Both bulbs go out. E. One needs more information to answer.
In a collision between two unequal masses, how does the impulse imparted to the smaller mass by the larger mass compare with the impulse imparted to the larger mass by the smaller one?
A) It is larger. B) It is smaller. C) They are equal. D) The answer depends on the ratio of the masses. E) The answer depends on how fast they are moving.
Acceleration: A racing car accelerates uniformly from rest along a straight track. This track has markers spaced at equal distances along it from the start, as shown in the figure. The car reaches a speed of 140 km/h as it passes marker 2. 
Where on the track was the car when it was traveling at half this speed, that is at 70 km/h?
A. Before marker 1 B. At marker 1 C. Between marker 1 and marker 2