As an airplane flying with constant velocity moves from a cold air mass into a warm air mass, the Mach number
1.increases.
2.decreases.
3.remains the same.
2
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If a material is transparent, then it
A) reflects light well. B) absorbs light well. C) transmits light well. D) scatters light well. E) emits light well.
When light shines on a lens placed on a flat piece of glass, interference occurs which causes circular fringes called Newton's rings. The two beams that are interfering come:
a. from the top and bottom surface of the lens. b. from the top surface of the lens and the top surface of the piece of glass. c. from the bottom surface of the lens and the top surface of the piece of glass. d. from the top and bottom surface of the flat piece of glass.
Which of the following particles has not yet been detected (even though most scientists consider its existence to be likely)?
a. The pion. b. The muon. c. The graviton. d. Intermediate vector bosons. e. The positron.
Light being amplified by stimulated emission of radiation is the principle of the photoelectric effect
Indicate whether the statement is true or false