Which laws of physics, if any, distinguish between the backward and the forward direction in time?
A) None.
B) The law of conservation of energy but not the second law of thermodynamics.
C) The law of conservation of energy and the second law of thermodynamics.
D) The second law of thermodynamics but not the law of conservation of energy.
E) Newton's law of motion.
D
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Exclusion Principle: In a hydrogen atom, a given electron has ? = 7. How many possible values can m1 have?
A. 6 B. 7 C. 15 D. 98
Assuming you are sitting still as you take this quiz, how would you draw your own worldline on a spacetime diagram?
A) a straight, vertical line B) You would not have a worldline because you are not moving. C) a straight, horizontal line D) a diagonal line
A small car has a head-on collision with a large truck. Which of the following statements concerning the magnitude of the average force due to the collision is correct?
A) The truck experiences the greater average force. B) The small car experiences the greater average force. C) The small car and the truck experience the same average force. D) It is impossible to tell since the masses are not given. E) It is impossible to tell since the velocities are not given.
A balloon containing 2.0 m3 of hydrogen gas rises from a location at which the temperature is 22°C and the pressure is 101 kPa to a location where the temperature is -39°C and the pressure is 20 kPa
If the balloon is free to expand so that the pressure of the gas inside is equal to the ambient pressure, what is the new volume of the balloon? A) 4.0 m3 B) 6.0 m3 C) 8.0 m3 D) 10 m3 E) 12 m3