Doubling the momentum of a particle:
a. does not change its relativistic total energy.
b. quadruples its relativistic total energy.
c. doubles its relativistic total energy.
d. requires less of a speed increase as the speed increases.
D
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The word "comet" comes from the Greek word for which of the following?
A) bright B) hair C) fuzzy D) tail
The radius of the earth’s (almost circular) orbit around the sun is 150,000,000 km, and it takes 1 y for the earth to go around the sun. Imagine that a certain satellite goes in an almost circular orbit of radius 15,000 km around the earth (this radius is 10,000 times smaller than the earth’s orbital radius around the sun). What is the period of this orbit?
A. 10-6 y B. 10-4 y C. 10-3 y D. 106 y E. These periods are not related in any simple way.
Star A has twice the parallax as Star B. Star A is
A) twice as far as Star B. B) four times as far as Star B. C) eight times as far as Star B. D) half as far as Star B. E) one fourth as far as Star B.
If a radio wave has speed 3.00 × 10^8 m/s and frequency 99.7 MHz, what is its wavelength?
a. 8.78 m c. 2.78 m b. 1.50 m d. 3.01 m