The force of gravity does NOT do work on an object that is:
a. falling.
b. rising.
c. stationary.
d. a falling piece of writing paper.
e. being pushed upwards.
c
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Which of the following objects are probably not located in the same general region of the solar system in which they originally formed?
A) Kuiper belt comets B) asteroids of the asteroid belt C) Pluto D) Oort cloud comets
Must we see both spectral lines splitting to find a spectroscopic binary?
What will be an ideal response?
Water pressurized to 4 × 10^5 Pa is flowing at 5.0 m/s in a pipe which contracts to 1/3 of its former area. What are the pressure and speed of the water after the contraction? (density of water = 1 × 10^3 kg/m3)
a. 2 × 10^5 Pa, 15 m/s c. 3 × 10^5 Pa, 15 m/s b. 3 × 10^5 Pa, 10 m/s d. 4 × 10^5 Pa, 1.5 m/s
Computer 3.24 M + .532 M to the correct number of Significant figures
A. 3.7 m B. 3.77 M C. 3.772 M D. 3.7720 M