With respect to the stars, the Moon
A) circles the Earth.
B) and the Earth circle each other.
C) remains stationary while the Earth circles about it.
D) does not rotate about its own axis as the Earth does.
Answer: B
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The isotope 64Zn has a nuclear radius of 4.8 × 10^-15 m. Approximately what is the nuclear radius of the isotope 125Te?
a. 2.0 × 10^-15 m c. 2.7 × 10^-15 m b. 3.6 × 10^-15 m d. 6.0 × 10^-15 m
Consider the situation shown below. Assume that the charges are point particles and that point T is twice as far from the positive particle as it is from the negative particle. At which point might the electric field be zero? (If no labelled point seems exactly right, choose the closest.)
A. A
B. B
C. C
D. D
E. E
F. F
T. T
Two coherent light sources are characterized by
A) having the same amplitude. B) having the same frequency. C) having the same wavelength. D) having the same velocity. E) having the same frequency and maintaining a constant phase difference.
The speed of a vertically-thrown ball at the top of its path is
A) zero. B) 10 m/s2. C) between zero and 10 m/s2. D) dependent on the mass of the ball.