A 0.28-kg stone you throw rises 34.3 m in the air. The impulse your hand receives from the stone while it throws the stone is

a. 2.7 N s, up.
b. 2.7 N s, down.
c. 7.3 N s, up.
d. 7.3 N s, down.
e. 9.6 N s, up.


d

Physics & Space Science

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In the process of fluorescence, ________ is absorbed by an atom and the energy is emitted as ________.

A. an ultraviolet and one or more lower energy photons; a visible light photon B. a visible light and one or more lower energy photons; an ultraviolet photon C. an ultraviolet photon; at least one visible light and one or more lower energy photons D. a visible light photon; at least one ultraviolet and one or more lower energy photons

Physics & Space Science

The near point of a farsighted person is 100 cm. She places reading glasses very close to her eyes, and with them she can comfortably read a book at a distance of 25 cm. What is the power of the lenses in her reading glasses?

A) +2.5 diopters B) +3.0 diopters C) +3.2 diopters D) -2.0 diopters

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It is found that a laser bounced off a glass surface incident at 57 degrees produces a transmitted beam angle of 38 degrees with respect to the vertical. At what incident angle will the reflected laser beam be fully polarized?

A.
B.
C.
D.

Physics & Space Science

If the primary colors of the subtractive theory are cyan, magenta, and yellow, why are the colors in the artist's subtractive theory red, blue, and yellow?

Physics & Space Science