The process of convection occurs in
A) solids.
B) liquids.
C) gases.
D) fluids.
E) none of the above
Answer: D
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The process of making an electron less tightly bound to an atom's nucleus is known as
a. excitation. b. Doppler broadening. c. collisional broadening. d. a red shift. e. quantum mechanics.
A pilot drops a package from a plane flying horizontally at a constant speed. Neglecting air resistance, when the package hits the ground the horizontal location of the plane will
A) be behind the package. B) be over the package. C) be in front of the package. D) depend of the speed of the plane when the package was released.
A transiting extrasolar planet is observed to block 1% of its host star's light. How does the size of this planet compare to the host star?
A) The planet's radius is 10% of the host star's radius. B) The planet is the same size as the host star. C) The planet's radius is 0.1% of the host star's radius. D) The planet's radius is 1% of the host star's radius.
A hole is poked through the metal side of a drum holding water. The hole is 16.0 cm below the water surface. What is the initial speed of outflow?
a. 1.77 m/s b. 17.7 m/s c. 0.566 m/s d. 3.14 m/s e. 1.25 m/s