The critical angle for total internal reflection is a:
A. is a single angle for which transmission through the boundary is zero
B. a maximum angle of incidence, below which no light is transmitted through the boundary
C. minimum angle of incidence, above which no light is transmitted through the boundary
D. may be either a minimum or a maximum angle, depending on which of the indices of refraction is larger
C. minimum angle of incidence, above which no light is transmitted through the boundary
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If the Sun was replaced by a black hole of equal mass, Earth would _____
a. fall into the black hole on a virtually straight path b. spiral in to the black hole over several months c. spiral in to the black hole over the course of several decades d. continue in its normal orbit e. spiral away from the black hole, pushed by gravitational waves
Sublimation is a change of phase from solid to gas without
A) passing through the liquid phase. B) a transfer of energy. C) a change of temperature.
Every cause has an effect and every effect has a cause
a. True b. False Indicate whether the statement is true or false
A transistor is an example of a
A) resistor. B) superconductor. C) semiconductor. D) dry cell. E) transmitter.