Planning to elope with her boyfriend, Janice slides down a rope from her fourth story window. As she slides down the rope, she tightens harder on the rope which of course increases the tension in the rope
When the upward tension in the rope equals Janice's weight A) Janice will slow down.
B) Janice will speed up.
C) Janice will continue down at constant speed.
D) the rope will break.
E) Janice will stop moving down the rope.
C
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A) 23.62 × 108 B) 0.36 × 109 C) 4.35 × 1010 D) 0.056 × 1011
Briefly describe the three most commonly used methods of indirect planet detection
What will be an ideal response?
This figure depicts pollen grains suspended in a liquid exhibiting a continual, erratic motion known as Brownian motion. Albert Einstein inferred that atoms exist based on his calculations that described this type of motion. What was the basis for his conclusion?
a. The erratic motions of the pollen grains were explained by Einstein to result from random collisions with water molecules. b. The tiny grains could be shown to be atoms. c. The existence of atoms was an inescapable conclusion of his theory of relativity. d. The existence of atoms was an inescapable conclusion of his theory of the photoelectric effect. e. The existence of atoms was an inescapable conclusion of his theory of heat capacities of solids.
The maximum sediment load of a stream depends on
A) average stream speed. B) channel geometry. C) stream gradient. D) stream discharge.