If a star's temperature increases in its interior, then more nuclear reactions will occur to push the star outward and its temperature will drop, causing the star to contract and eventually return to equilibrium
a. True
b. False
Indicate whether the statement is true or false
True
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Reactance: A 0.200-H inductor is connected to a 60.0-Hz 120-V rms source.(a) What is the inductive reactance?(b) What is the rms current to the inductor?(c) If both the inductance and the frequency were doubled, what would be the rms current?
What will be an ideal response?
What is the "raisin cake analogy" to the expanding universe intended to explain?
A) That as a raisin cake expands, every raisin moves away from every other raisin, just as galaxies move away from each other in an expanding universe. B) That raisins, like galaxies, expand in size as the cake or universe expands. C) That from within the raisin cake, you would see other raisins moving away from you only if you were on the central raisin, just as you see galaxies moving away only if you are in the center of the universe. D) That the universe heats up as it expands, just as the raisin cake heats up as it bakes.
Anders and Taisen release their snowballs from the same height and at the same time. Ander's is dropped while Taisen’s is thrown horizontally. Which one hits the ground first?
A. the "dropped" snowball B. the "thrown" snowball C. they hit at the same time D. it depends on how hard Taisen threw E. it depends on the initial height
The darker-colored bands in Jupiter's atmosphere are called ________.
A. belts B. cells C. zones D. gaps E. layers