According to Einstein, increasing the brightness of a beam of light without changing its color will increase:

a. the frequency of the photons.
c. the speed of the photons.
b. the energy of each photon.
d. the number of photons.


D

Physics & Space Science

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A dinner plate falls vertically to the floor and breaks up into three pieces, which slide horizontally along the floor. Immediately after the impact,

a 200-g piece moves along the +x-axis with a speed of 2.00 m/s, a 235-g piece moves along the +y-axis with a speed of 1.50 m/s. The third piece has a mass of 100 g. What is the speed of the third piece? A) 2.51 m/s B) 2.57 m/s C) 3.50 m/s D) 5.33 m/s E) 6.83 m/s

Physics & Space Science

From 1979 to 1999 Pluto was closer to the sun than

a. Earth. b. Uranus. c. Neptune. d. Saturn. e. Jupiter

Physics & Space Science

Contrast the orbits of comets and asteroids

What will be an ideal response?

Physics & Space Science

Which of the following statements about comets best describes the light we can observe?

A) A comet emits visible light and reflects infrared light. B) A comet emits no light, but reflects visible light. C) A comet emits visible light and infrared light. D) A comet emits infrared light and reflects visible light.

Physics & Space Science