In two-dimensional collisions momentum conservation is
A. In the x or y direction, but not both
B. In both the x and y directions
C. In the y direction only
D. In the x direction only
Ans: B. In both the x and y directions
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Clouds that begin to develop 6000 meters above the ground are generally
A) stratus and stratocumulus type clouds. B) cumulus and stratus type clouds. C) cirrus and cirrostratus type clouds. D) cumulonimbus and altocumulus type clouds.
A given metal has a magnetic susceptibility of 100,000. This metal is
(a) Diamagnetic. (b) Antiferromagnetic. (c) Ferromagnetic. (d) Paramagnetic.
What is the magnitude of the horizontal-velocity component of the rock as it hits the ground?
a. 79.5 m/s b. 8.81 m/s c. 58.7 m/s d. 7.39 m/s