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

Physics & Space Science

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Which of the following is not a derived quantity?

a. Volume b. Speed c. Mass d. Density

Physics & Space Science

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.

Physics & Space Science

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

Physics & Space Science

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.

Physics & Space Science