Which has the highest frequency?
A) red light.
B) green light.
C) blue light.
D) all the same
Answer: C
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An apparent westward motion of a planet in the sky compared to the background stars (as viewed from the Earth) when observed on successive nights is referred to as
a. epicycle b. retrograde motion c. prograde motion d. heliocentric motion e. deferent
Radio waves have wavelengths that are ________ visible wavelengths.
A. slower than B. the same energy as C. faster than D. longer than E. shorter than
A 60.0-Hz AC generator with a peak voltage of 110 V drives a series RL circuit with R = 10.0 ? and L = 10.0 mH. The peak current in the circuit is
A. 0.963 A. B. 10.3 A. C. 11.0 A. D. 11.9 A. E. 29.2 A.
The intricate patterns visible in an X-ray image of the Sun generally show ________
A) structure within sunspots B) a bubbling pattern on the photosphere C) helioseismological fluctuations D) extremely hot plasma flowing along magnetic field lines