As you move farther away from a source emitting a pure tone, the ___________ of the sound you hear decreases
a. frequency
b. period
c. wavelength
d. amplitude
e. none of the above
d
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The figure shows a distance vs. time graph of an object with three distinct regions, I, II, and III
?
The object’s velocity is positive in region(s)
a.
I.
b.
II.
c.
III.
d.
no regions
If the same-sized force is made to act over a smaller area, the pressure is
a. decreased b. increased c. unchanged d. dependent upon the shape of the area
If you want to store 2.0 mJ of energy in a 10-?F capacitor, how much potential do you need to put across it?
A) 5.0 V B) 10 V C) 15 V D) 20 V
If each frame of a motion picture film is 35 cm high, and 24 frames go by in a second, estimate how many frames are needed to show a two hour long movie
a. 1 400 b. 25 000 c. 50 000 d. 170 000 e. This cannot be determined without knowing how many reels were used.