What is the cause of Jupiter's slight flattening, which results in an equatorial diameter 6% greater than its polar diameter?
A) its rapid spin cycle
B) its massive gravitational pull
C) nuclear fission within its core
D) its frequent reversal of its magnetic poles
Answer: A
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Material objects cannot be accelerated up to lightspeed because
A) their length decreases [toward zero] as they approach lightspeed. B) of the curvature of space, which increases toward infinite curvature as the object approaches lightspeed. C) their inertia increases [toward infinity, i.e., without bound] as they approach lightspeed. D) nothing can move at the speed of light. E) Nonsense--objects can be sped up to lightspeed, as we can see from the example of light itself.
The amount of heat energy a refrigerator removes from the food stored inside it is ___________ the amount of electrical energy required to run the refrigerator
a. equal to b. greater than c. less than d. unrelated to
The conventional direction of magnetic field lines outside a magnet are from
A) north to south. B) south to north. C) either way
On the 1-to-10-billion scale, about how far is it to the nearest stars besides the Sun?
A) 4 kilometers B) 400 kilometers C) 1,000 kilometers D) 4,400 kilometers E) 10,000 kilometers