Among the following electromagnetic waves, photons of which electromagnetic radiations carry the lowest energy?
A) Radio waves
B) Visible light
C) Ultraviolet
D) Gamma rays
A
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Doubling the diameter of a loop of wire produces what change of induced emf?
A. The induced emf is 4 times as much. B. The induced emf is twice as much. C. There is no change in the induced emf. D. The induced emf is 6.28 times as much.
The bond energy of a pair of atoms is equal to the depth of the interatomic potential at the ______________interatomic separation.
Fill in the blank(s) with the appropriate word(s).
Two point charges q1 = 4.0 ?C and q2 = -8.0 ?C are placed along the x-axis at x1 = 0 m and x2 = 0.20 m, respectively. What is the electric potential energy of this system of charges?
A) +1.4 J B) -1.4 J C) -32 J D) 4.0 J E) -4.0 J
The orientation of an image seen projected on a screen by a single lens is always __________
Fill in the blank(s) with correct word