The Tokamak is a type of
A. experimental fusion reactor.
B. particle accelerator.
C. nuclear reactor using graphite as a moderator, such as the reactor at Chernobyl.
D. moderator used in pressurized heavy water reactors.
Answer: A
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Mild, short-term cooling periods during the Earth's history are known as
A) ice storms B) nuclear winters C) snowball Earth D) ice ages
Two blocks are accelerated across a horizontal frictionless surface as shown. Frictional forces keep the two blocks from sliding relative to each other, and the two move with the same acceleration. If F = 1.2 N and M = 1.0 kg, what is the horizontal component (frictional force) of the force of the small block on the large block?
A. 0.48 N to the right B. 0.72 N to the right C. 0.72 N to the left D. 0.48 N to the left E. 0.65 N to the left
Two waves are described by y1 = 6 cos 180t and y2 = 6 cos 186t, (both in meters). What effective frequency does the resultant vibration have at a point?
a. 92 Hz b. 183 Hz c. 6 Hz d. 3 Hz e. 366 Hz
Charge A and charge B are 3.00 m apart, and charge A is +2.00 C and charge B is +3.00 C. Charge C is located between them at a certain point and the force on charge C is zero. How far from charge B is charge C?
a. 1.35 m c. 1.65 m b. 0.667 m d. 0.555 m