White light hitting white paper is an example of
A) absorption. B) transmission.
C) reflection or scattering. D) emission.
C
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The rings of Uranus and Neptune are found:
A) by the Hubble Space Telescope. B) above their equators. C) in the ecliptic plane. D) outside the Roche limit. E) All of the above.
If Q = 25 ?C, q = 10 ?C, and L = 40 cm in the figure, what is the magnitude of the electrostatic force on q?
A. 28 N B. 22 N C. 20 N D. 14 N E. 10 N
In chemical equations, numbers placed before formulas are known as ______________
Fill in the blank(s) with correct word
Consider two cylinders of gas identical in all respects except that one contains oxygen O2 and the other helium He. Both cylinders initially contain the same volume of gas at 0°C and 1 atm of pressure and are closed by a movable piston at one end
Both gases are now compressed adiabatically to one-third their original volume. (a) Which gas will show the greater temperature increase? 1. the O2 2. the He 3. Neither; both will show the same increase. 4. It is impossible to tell from the information given. (b) Which gas will show the greater pressure increase? 1. the O2 2. the He 3. Neither; both will show the same increase. 4. It is impossible to tell from the information given.