The superposition principle has to do with which of the following?
a. effects of waves at great distances
b. the ability of some waves to move very far
c. how displacements of interacting waves add together
d. relativistic wave behavior
C
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A block is on a frictionless horizontal table, on earth. This block accelerates at 1.9 m/ when a horizontal force is applied to it. The block and table are then set up on the moon where the acceleration due to gravity is 1.62 m/s2
What is the weight of the block on the moon? A) 77 N B) 67 N C) 58 N D) 48 N E) 39 N
This figure summarizes the geological histories of the terrestrial worlds. Based on this figure, what can you conclude?
A) The most important factor in a planet's geological history is its size. B) The most important factor in a planet's geological history is its distance from the Sun. C) We can trace almost all the key properties of a planet's geology back to the number of impacts it suffered during the heavy bombardment. D) Earth is the only planet in the inner solar system capable of harboring life.
A wheel is rotated about a horizontal axle at a constant angular rate. Next, it is rotated in the opposite direction with the same angular rate. The acceleration at a point on the top of the wheel in the second case as compared to the acceleration in the first case:
a. is in the same direction. c. is upward. b. is in the opposite direction. d. is tangential to the wheel.
Polarized light is to have its polarization plane rotated by 90°. In which of the following cases does the final beam have the greatest intensity?
a. 3 polarizing filters, each rotate beam by 30°. b. 2 polarizing filters, both rotate beam by 45°. c. 1 polarizing filter, rotating beam by 90°. d. None of the above, polarized light can't be rotated.