Exhibit 18-1The figure below shows wave crests after a stone is thrown into a pond.
Use this exhibit to answer the following question(s).
Refer to Exhibit 18-1. The phase difference in radians between points A and C is
A.
B.
.C.
D.
.E.
Answer: E
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Which of the following energy transport processes involves mass motions of material?
a. radiation b. conduction c. convection d. All of the other choices are correct.
Photon Energy: Increasing the brightness of a beam of light without changing its color will increase
A. the number of photons per second traveling in the beam. B. the energy of each photon. C. the speed of the photons. D. the frequency of the light. E. the wavelength of the photons.
A person looks horizontally at the edge of a swimming pool. If its length is 5 m, and the pool is filled to the surface, to what depth (in m) could the observer see? (n for water is 1.33.)
a. 3.2 b. 4.4 c. 2.1 d. 1.0 e. 0.3
Which of the following is true?
1.A moving car with constant acceleration can never stop and stay stopped. 2.If a car is traveling eastward, its acceleration is eastward. 3.If a car is slowing down, its acceleration must be negative. 4.If a car is speeding up, its acceleration must be greater than zero.