Galileo dropped two balls of different weights and found they accelerated equally to the ground below. Einstein imagined the same result for a side-by-side drop

A) without invoking gravity.
B) in an accelerating vehicle.
C) whether they were of the same mass or not.
D) all of the above
E) none of the above


Answer: D

Physics & Space Science

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A. Wien's law B. the Zeeman effect C. We have measured the sunspots' fields with spacecraft. D. the Hubble effect E. None of these choices is correct.

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The mass density of an object equals its _____ divided by its ________

Fill in the blank(s) with correct word

Physics & Space Science