An airplane flying with a constant speed flies from a warm air mass into a cold air mass. The Mach number will
a. increase.
b. decrease.
c. stay the same.
d. become unstable.
a
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Resolution: With what color light would you expect to be able to see the finest detail when using a microscope?
A. red, because of its long wavelength B. yellow, because of its intermediate wavelength C. blue, because of its shorter wavelength D. The color does not matter.
As an electromagnetic wave travels through free space, its speed can be increased by:
a. increasing its frequency. b. increasing its energy only. c. increasing both its energy and momentum. d. None of the above will increase its speed.
A layer of kerosene (n = 1.45) is floating on water (n = 1.33). For what angles of incidence at the kerosene-water interface will light be totally internally reflected within the kerosene?
Which of the following is the nation's leading spokesperson on matters of public health?
What will be an ideal response?