The large axial tilt of Uranus is believed to have been caused by ________ catastrophic event(s), such as collision(s)
Fill in the blank(s) with correct word
multiple or two
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If a long spring with spring constant k is cut into 4 equal lengths, what is the spring constant of each of the 4 shorter springs?
a. It is still k. b. It is k/4. c. It is 4k. d. It is k/16. e. It is k + 4.
Two otherwise identical light waves arriving at the same point with peak matching valley undergo
a. constructive interference b. destructive interference c. polarization d. none of the above
During which of the following phases of life is a star's pressure and gravity out of equilibrium?
A) main sequence B) helium core fusion C) white dwarf D) red giant E) A star is never out of equilibrium.
A space station out beyond the solar system is rotating with constant angular velocity. A spaceship heading into the station along a diameter of the station, uses its rockets to brake, and then docks inside the station at its center. When the spaceship docks, the angular momentum of the system consisting of the station and ship
a. is less than the original angular momentum of the station. b. is the same as the original angular momentum of the station. c. is greater than the original angular momentum of the station. d. is less than the original angular momentum of the station, but the angular velocity increases. e. is greater than the original angular momentum of the station, but the angular velocity decreases.