If two uncharged objects are rubbed together and one of them acquires a positive charge then the other one
A)
remains the same.
B)
also acquires a positive charge.
C)
acquires a negative charge.
D)
may or may not acquire a positive charge.
E)
may or may not acquire a negative charge.
C
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A source emits sound at a fixed constant frequency f.If the source moves away from you, and at the same time you run away from the source, the frequency you hear is
a. the same as f. b. higher than f. c. lower than f. d. unrelated to f.
Science is a body of knowledge that
A) describes order in nature. B) is an ongoing human activity. C) condenses knowledge into testable laws. D) all of the above E) none of the above
Contrast the atmosphere of Venus with its clouds
What will be an ideal response?
Of the following photons, which has the lowest energy?
a. visible c. infrared b. ultraviolet d. microwave