The mean free path of molecules in a gas is proportional to:
A. the molecular diameter
B. the reciprocal of the molecular diameter
C. the molecular concentration
D. the reciprocal of the molecular concentration
E. the average molecular speed
Answer: D. the reciprocal of the molecular concentration
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A 2.00 kg hollow sphere of radius 6.00 cm starts from rest and rolls without slipping down a 10.0 degree incline. If the length of the incline is 50.0 cm, then the velocity of the center of mass of the hollow sphere at the bottom of the incline is
A. 1.51
B. 1.47
C. 1.22
D. 1.01
E. 1.95
Suppose that the Sun shrank in size but that its mass remained the same. What would happen to the orbit of the Earth?
A) Earth's orbit would be unaffected. B) The size of Earth's orbit would shrink, and it would take less than one year to orbit the Sun. C) Earth's orbit would expand, and it would take more than one year to orbit the Sun. D) Earth would change from a bound orbit to an unbound orbit and fly off into interstellar space.
The peak of a body's blackbody radiation curve shifts upward as the temperature of the body __________
Fill in the blank(s) with correct word
Atoms chemically bond to achieve an electron configuration as similar as possible to that of the ______________ atoms.
Fill in the blank(s) with the appropriate word(s).