A laser beam strikes a plane mirror's reflecting surface with an angle of incidence of 43°. What is the angle between the incident ray and the reflected ray?
A) 43°
B) 86°
C) 45°
D) 90°
E) 0°
B
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If the frequency of the AC voltage across an inductor is doubled, the inductive reactance of that inductor
A) decreases to one-half its original value. B) increases to twice its original value. C) decreases to one-fourth its original value. D) increases to 4 times its original value.
The lithospheric plates are believed to be put into motion by the driving force of ______________ cells in the asthenosphere
Fill in the blank(s) with correct word
If oxygen were used as nuclear fuel, it would be best
A) fused. B) fissioned. C) either of these
A coil with a self-inductance of 6.0 H has a constant current of 2.0 A flowing through it for 2.0 s. What is the emf induced in this coil?
A) 6.0 V B) 12 V C) 0.0 V D) 4.0 V E) 8.0 V