The speed of a comet in its orbit around the Sun is ______________ when its distance from the Sun is least (perihelion)
a. zero
b. reversed
c. greatest
d. least
c
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Which of the following is not a derived quantity?
a. Volume b. Speed c. Mass d. Density
All but the most inactive metals react with acids to give
a. hydrogen and the metal salt. b. hydrogen and the metal hydroxide. c. hydrogen and the metal oxide. d. oxygen and the metal hydride.
The saying "The present is the key to the past" is a simple way to state the basic geologic concept of ______________
Fill in the blank(s) with correct word
Consider the motion of a 1.00 kg particle that moves with potential energy given by U(x) = -(2.0 J?m)/x + (4.0 J?m2)/x2. Suppose the particle is moving with a speed of 3.00 cm/s when it is located at x = 3.00 m
At which other position would the speed be equal to 3.00 cm/s? A) 3.00 m B) 6.00 m C) 4.50 m D) 5.00 m E) The only position at which the speed is 3.00 cm/s is at x = 3.00 m.