Some large clusters of galaxies do not appear to contain enough mass to hold themselves together
Indicate whether the statement is true or false
T
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Find the circulation for the path shown.
A. -(4 A)
B. (4 A)
C. -(28 A)
D. (28 A)
E. -(7 A)
A 50.0-kg block is being pulled up a 16.0° slope by a force of 250 N which is parallel to the slope. The coefficient of kinetic friction between the block and the slope is 0.200. What is the magnitude of the acceleration of the block?
A) 0.528 m/ B) 0.158 m/ C) 0.412 m/ D) 0.983 m/ E) 0.260 m/
Which general pattern holds for various excited states in standing waves on a rope or string fixed at both ends?
A. Guitars and violins have antinodes only in even numbers: 0, 2, 4, and so on B. Where the nodes are, you also find two antinodes C. More antinodes means shorter wavelengths D. Standing waves involve the interference of waves traveling in the same direction
An older model car accelerates from rest to speed v in 10 seconds. A newer, more powerful sports car accelerates from rest to speed 2v in half the time (5 seconds). What is the ratio of the power of the newer car to that of the older car?
1.0.125 2.1.0 3.4.0 4.8.0