The symbol G is used to represent
a. the acceleration of gravity.
b. the universal gravitational constant.
c. grams.
d. gravity.
e. none of the above.
b
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Notice how the eight planets group roughly into pairs on the graphs. Which planets are in each pair?
What will be an ideal response?
From lowest energy to highest energy, which of the following correctly orders the different categories of electromagnetic radiation?
A) infrared, visible light, ultraviolet, X-rays, gamma rays, radio B) radio, infrared, visible light, ultraviolet, X-rays, gamma rays C) visible light, infrared, X-rays, ultraviolet, gamma rays, radio D) gamma rays, X-rays, visible light, ultraviolet, infrared, radio E) radio, X-rays, visible light, ultraviolet, infrared, gamma rays
The internal resistances of an ideal voltmeter and an ideal ammeter are respectively (ideal meaning the behavior of the system is not changed when using the meter):
a. zero and zero. b. infinite and infinite. c. zero and infinite. d. infinite and zero.
A cube-shaped box is sitting on the floor. The pressure the box exerts on the floor is 235 Pa. If the density of the box is 21.0 kg/m3, what is the length of each side of the box?
a. 0.00910 m b. 1.14 m c. 110 m d. 11.2 m