____ occur when the moon is first or third quarter
a. Neap tides
b. Spring tides
c. Total solar eclipses
d. Annular eclipses
e. A coppery red moon will
A
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A wave oscillates up and down twice in 1 s. If the wave travels an average distance of 6 m in 1 s, its wavelength is
A) 0.5 m. B) 1 m. C) 2 m. D) 3 m. E) 6 m.
A linear charge of nonuniform density ? = bx, where b = 2.1 nC/m2, is distributed along the x axis from x = 2.0 m to x = 3.0 m. Determine the electric potential (relative to zero at infinity) of the point y = 4.0 m on the y axis.
A. 36 V B. 95 V C. 10 V D. 17 V E. 15 V
Compared to the moons of Jupiter, the moons of the more distant Jovian planets
A) contain a higher proportion of rock B) are made of a mixture of rock and methane ice C) contain higher overall proportions of water ice as well as methane and other ices D) are made completely of methane ice
A ruby laser beam (? = 694.3 nm) is sent outwards from a 2.7-m diameter telescope to the moon, 384,000 km away. What is the radius of the big red spot on the moon?
a. 500 m b. 250 m c. 120 m d. 1.0 km e. 2.7 km