Which is lightest in weight?
A) oxygen atom
B) water molecule
C) electron
D) hydrogen atom
E) proton
C
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Impulse: Three cars, car X, car Y, and car Z, begin accelerating from rest at the same time. Car X is more massive than car Y, which is more massive than car Z. The net accelerating force exerted on each car is identical. After 10 seconds, which car has the most amount of momentum?
A. They all have the same amount of momentum. B. Car X C. Car Y D. Car Z
The colors of Jupiter's clouds suggest the presence of ________.
A. organic molecules B. iron oxides C. red-shifted colors due to the fast motion D. hydrogen and helium E. carbon dioxide
The principle of equivalence tells us that
A) mass and energy are forms of each other. B) space and time are forms of each other. C) electricity and magnetism are forms of each other. D) observations made in an accelerating reference frame are indistinguishable from those made in a gravitational field. E) all of the above
On bare feet, a tile floor feels colder than a rug because the tile has a greater ______________
Fill in the blank(s) with correct word