This photograph shows a hurricane from space. Why does it have the clockwise swirl?
A) because of the Coriolis effect
B) because it is a strong hurricane
C) because it is in the Northern Hemisphere
D) because of the greenhouse effect
A) because of the Coriolis effect
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Spicules are:
A) atoms with the same number of protons but different number of neutrons. B) rapidly moving atoms and ions that escape from the solar corona and blow outward through the Solar System. C) chromosphere flashes that are viewed as thin pink lines above the photosphere. D) flamelike jets of gas extending upward into the chromosphere and lasting 5 to 15 minutes.
A thin rectangular piece of wood floats in water. You slowly pour oil with a density equal to that of the wood on the surface of the water until the height of the oil above the water is twice the height of the piece of wood. Which statement is correct?
A. The wood floats on top of the oil, so it sticks up in the air. B. The wood does not change its position C. The wood sinks below the surface of the water. D. The wood is half in the water and half in the oil. E. The wood floats in the oil just above the water.
A top of rotational inertia 4.0 kg m2 receives a torque of 2.4 Nm from a physics professor. The angular acceleration of the body will be
A. 6.0 rev/s2. B. 0.6 rad/s2. C. 1.2 rev/s2. D. 1.0 rad/s2. E. 6.0 rad/s2.
Water is flowing at 4.0 m/s in a circular pipe. If the diameter of the pipe decreases to 1/2 its former value, what is the velocity of the water downstream?
a. 1.0 m/s b. 2.0 m/s c. 8.0 m/s d. 16 m/s e. 4.0 m/s