Unlike other particles, photons have a finite momentum even though they have no mass

Indicate whether the statement is true or false


TRUE

Physics & Space Science

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The weight of air in a bathtub (about 1/3 cubic meter) is about the same as the weight of

A) a pea. B) an egg. C) a small apple. D) a pound of butter. E) a 10-pound sack of potatoes.

Physics & Space Science

The diameter of no. 12 copper wire is 0.081 in. The maximum safe current it can carry (in order to prevent fire danger in building construction) is 20. A

At this current, what is the drift velocity of the electrons? (The number of electron carriers in one cubic centimeter of copper is 8.5 × 1022.)

Physics & Space Science

An archer pulls her bow string back 0.40 m by exerting a force that increases uniformly from zero to 240 N. What is the equivalent spring constant of the bow, and how much work is done in pulling the bow?

Physics & Space Science

When you look at a single slit diffraction pattern produced on a screen by light of a single wavelength, you see a bright central maximum and a number of maxima on either side, their intensity decreasing with distance from the central maximum. If the wavelength of the light is increased,

a. the pattern shrinks in size. (central maximum less wide; other maxima in closer to it) b. the pattern increases in size. (central maximum wider; other maxima farther from it) c. it does not affect the size of the pattern. d. the width of the central maximum increases, but the other maxima do not change in position or width. e. the width of the central maximum decreases, but the other maxima do not change in position or width.

Physics & Space Science