A spinning wheel has an angular momentum that points toward the east. If an eastward force is applied to the edge of the wheel,
A. the angular momentum of the wheel will not change.
B. the angular momentum will get larger.
C. the angular momentum of the wheel will change direction but not magnitude.
D. the angular momentum will get smaller.
Answer: C
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In order to move in a perfectly circular path, the net force on an object must
A. equal zero. B. have a constant magnitude and direction. C. always change both magnitude and direction. D. always change magnitude but not direction. E. always change direction but not magnitude.
Compare the planar atom density of the {100}-type planes with the {111}-type planes in the FCC structure of copper that has a lattice parameter of 0.361 nm.
What will be an ideal response?
Quasars are isolated supermassive black holes, and not associated with galaxies
a. True b. False Indicate whether the statement is true or false
Five stars and their spectral types are given below. Which star would have the lowest surface temperature?
a. ? For; F8 b. ? Cet; M7 c. 35 Ari; B3 d. ? Tri; A0 e. ? Per; O7