A cart maintains a constant velocity of 100 m/s for 10 seconds. During this interval its acceleration is
A) zero.
B) 1 m/s2.
C) 10 m/s2.
D) none of the above
Answer: A
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X-rays are emitted by way of
A) ionizing radiation. B) transitions within an atom's innermost electrons. C) transitions within the atomic nucleus. D) none of the above
For each 8-km segment of a satellite in close Earth orbit, the "drop" toward Earth is about
A) 5 m. B) 10 m. C) also 8 km.
An object that completes 100 vibrations in 5 seconds has a period of
A) 0.5 second. B) 1 second. C) 2 seconds. D) none of the above
What is the Pauli exclusion principle?
a. Only two electrons can be in the same state (have the same quantum numbers). b. No two electrons can be in the same state (have the same quantum numbers). c. Electrons repel each other. d. No two elements can have electrons in the same state (with the same quantum numbers). e. No two electrons can occupy the same shell.