________ is the concept that all large samples of the universe are alike in appearance anywhere in the universe
Fill in the blank(s) with correct word
Homogeneity
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Suppose there were no solar wind. How would the appearance of a comet in our inner solar system be different?
A) It would have only one tail instead of two. B) It would not have a coma. C) It would not have a nucleus. D) It would be much brighter in appearance.
A stationary 1.67-kg object is struck by a stick. The object experiences a horizontal force given by F = at - bt2, where t is the time in milliseconds from the instant the stick first contacts the object
If a = 1500 N/(ms) and b = 20 N/(ms)2, what is the speed of the object just after it comes away from the stick at t = 2.74 ms? A) 3.3 m/s B) 22 m/s C) 3.7 m/s D) 25 m/s
Linear momentum
a. has the units of mass times acceleration. b. has magnitude and direction. c. is a scalar quantity. d. none of these
The Aswan High Dam is 111 m high. What is the water pressure at the foot of the dam?
A) 1.09 k Pa B) 0.111 k Pa C) 0.111 M Pa D) 1.09 M Pa E) 111 Pa