Suppose you know the frequency of a photon and the speed of light. What else can you determine about the photon?
A) its temperature
B) the chemical composition of the object that emitted it
C) its wavelength and energy
D) its acceleration
C
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A boat moves at 10.0 m/s relative to the water. If the boat is in a river where the current is 2.0 m/s, how long does it take the boat to make a complete round trip of 1.00 km upstream followed by a 1.00 km trip downstream?
By definition, the addition of oxygen to a substance is called
a. neutralization. b. reduction. c. oxidation. d. displacement.
Storm winds blowing at high speed over a roof can destroy the roof of a closed-up house because of Bernoulli's Principle. What happens is
A. the wind inside the house blows out the roof from the inside. B. friction rips up the roof and blows it apart. C. the higher pressure inside lifts the roof off the walls. D. the roof is pushed inward and collapses.
The photons having least energy are those of
A) infrared. B) red light. C) green light. D) blue light. E) ultraviolet.