How does the velocity of air moving over the top of the wing of an airplane in flight compare to the velocity of air moving under the wing?
A. The velocity under the wing is greater
B. The velocity over the wing is greater
C. The velocities are the same
Answer: B
You might also like to view...
Buoyancy: An object floats with half its volume beneath the surface of the water. The weight of the displaced water is 2000 N. What is the weight of the object? The density of water is 1000 kg/m3.
A. 1000 N B. 2000 N C. 4000 N D. It cannot be determined because we do not know the volume of the object.
Which of the following is the phase of matter in the Sun?
A) solid B) gas C) plasma D) liquid E) a mixture of all of the above
The change in entropy of a mass m of a solid substance which has a latent heat of fusion LF and melts at a temperature T is
A. LFT/m B. mLFln(T) C. mLFT D. mLF/T E. LF/mT
Marcia places a lead block and an iron block on the table, and hits both of them with the same force. The lead block is twice as massive as the iron block. The acceleration of the lead block is
A) half that of the iron block. B) a quarter of that of the iron block. C) equal to that of the iron block. D) two times that of the iron block. E) four times that of the iron block.