You hear a musician playing a series of notes of increasing frequency. As the frequency increases, the wave speed
A. decreases.
B. stays the same.
C. increases.
Answer: B
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Current: If a charge of 11.4 C passes through a computer in 1.75 min, what is the average current through the computer?
Fill in the blank(s) with the appropriate word(s).
The mean free path of molecules in a gas is:
A. the average distance a molecule travels before escaping B. the average distance a molecule travels between collisions C. the greatest distance a molecule travels between collisions D. the shortest distance a molecule travels between collisions E. the average distance a molecule travels before splitting apart
What is surprising about Earth's Moon?
A) It is surprisingly large in comparison to the size of its planet. B) It orbits surprisingly far away from Earth. C) It has a surprisingly large number of craters. D) The fact that it lacks a significant atmosphere.
According to the well-known equation E = mc2,
A) mass and energy travel at the speed of light squared. B) energy is actually mass traveling at the speed of light squared. C) mass and energy travel at twice the speed of light. D) mass and energy are related. E) none of the above