Does a nuclear power plant have a "smoke" stack, and why?
A) Yes, the "cooling towers" that can be seen at nuclear power plants are, in reality, smoke stacks.
B) No, because the plant creates no waste products.
C) No, because the plant does not combust its fuel.
D) Yes, because the plant releases its combustion products to the atmosphere through the stack.
E) Yes, the plant releases its waste fission products to the atmosphere through the stack.
C
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There is a current I flowing in a clockwise direction in a square loop of wire that is in the plane of the paper. If the magnetic field B is toward the right, and if each side of the loop has length L, then the net magnetic torque acting on the loop is
a.
2ILB.
b.
ILB.
c.
IBL2.
d.
zero.
T Tauri stars are believed to be young, high mass main sequence stars
Indicate whether the statement is true or false
A mirror lies flat on a table. A beam of light strikes the mirror with an angle of incidence or 15°, the reflected ray being to the right of the incident beam. The right edge of the mirror is then lifted so that the mirror now makes a 5° angle with the horizontal. What is the resulting angle between the incident beam and the reflected beam?
a. 25° c. 35° b. 20° d. The angle is not given.
Entropy: A 15.0-kg block of ice at 0.00°C falls into Lake Superior, which is a fresh water lake. The lake water is at 10.0°C, and the latent heat of fusion for ice is 3.34 × 105 J/kg. Find the change in entropy due to the melting of the ice (a) of the block of ice, (b) of the lake, and (c) of the system consisting of the lake and the ice. (d) Is your answer to part (c) consistent with the reversibility or irreversibility of the melting process?
What will be an ideal response?