A fish is 80 cm below the surface of a pond. What is the apparent depth (in cm) when viewed from a position almost directly above the fish? (For water, n = 1.33.)
A. 50
B. 60
C. 40
D. 70
E. 110
Answer: B
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Consider the situation shown below. Assume that the charges are point particles and that point T is twice as far from the positive particle as it is from the negative particle. At which point might the electric field be zero? (If no labelled point seems exactly right, choose the closest.)
A. A
B. B
C. C
D. D
E. E
F. F
T. T
The main form of radiation that our bodies emit is
a. ultraviolet b. infrared c. x ray d. microwave e. blackbody
In the tensile test of single crystals, the proportional limit stress depends upon the angle of the slip plane and the slip _____________relative to the tensile axis.
Fill in the blank(s) with the appropriate word(s).
Is it possible for an observer at 28°N to see the full moon on the zenith? Why or why not?