If the speed of light were infinite but the postulates of special relativity still held, then
A. time dilation would be obvious at low speeds.
B. length contraction would not occur.
C. objects could have negative kinetic energy.
D. any moving object would have infinite momentum.
Answer: B
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Dark matter ____
a. is homogenously distributed through the Universe b. began clumping due to tiny variations in density at the moment of the big bang c. began clumping due to large variations in the distribution of matter and antimatter d. is isotropically distributed through the Universe e. began clumping due to the variations in the distribution of baryonic matter
When is the best time for you to be able to see the constellation that is your sign of the Zodiac?
A) At midnight six months after your birthday. B) At sunset six months after your birthday. C) At sunset on your birthday. D) At midnight on your birthday. E) At noon on your birthday.
Express an angle of 35.20 rad in degrees
What will be an ideal response?
A scale from which a rock is suspended reads 5 N when the rock is out of water and 3 N when the rock is submerged. Buoyant force on the rock is
A) 2 N. B) 3 N. C) 4 N. D) 5 N.