Give at least one example of each of the following: (a) longitudinal standing wave. (b) transverse standing wave
What will be an ideal response?
(a) a sound wave in an open ended pipe
(b) vibrating string on a violin
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In the context of the formation of planets in the solar nebula, the frost line marks the distance from the Sun beyond which
A) the temperature was low enough for hydrogen compounds to condense into ices. B) the temperature was low enough for solid rock to condense from the gas. C) hydrogen compounds were particularly abundant. D) planets could be cold enough to have snow.
A square loop of wire has a current going around it. The magnetic field from the current on each side of the loop results in a magnetic force on the wire on the opposite side. Each resulting magnetic force on the opposite side wire
a. pushes inward on the loop. b. is actually zero since a current cannot push on itself. c. depends on whether the current is clockwise of counterclockwise. d. pushes outward on the loop.
Which of the following has virtually no effect on the internal structure of a planet?
A) its size B) its composition C) its magnetic field D) its mass
A spinning neutron star has been observed at the center of a
A) supernova remnant. B) planetary nebula. C) red supergiant. D) protostar.