A flat circular loop carrying a current of 2.0 A is in a magnetic field of 3.5 T. The loop has an area of 0.12 m2 and its plane is oriented at a 37° angle to the field. What is the magnitude of the magnetic torque on the loop?
A) 0.51 N ? m B) 0.67 N ? m C) 46 N ? m D) 0.10 N ? m
B
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The crust of Mars is believed to _____________ than Earth's
a. be much thinner b. be younger c. contain more water d. be more geologically active e. be much stronger
If the Moon rose tonight at 6 PM, then tomorrow it will rise about:
A) the same time. B) 7 PM. C) 5 PM. D) dawn. E) midnight.
A resistor is connected to normal 60. Hz, 120. volt AC. How many times a second does the instantaneous dissipated POWER reach a maximum?
A) 240 B) 0 C) 60 D) 30 E) 120
In the extrinsic range of operation of a p-type semiconductor made from silicon with acceptor atoms of gallium, the concentration of holes in the valence band (p) is equal to the concentration of:
(a) Gallium atoms (b) Silicon atoms (c) Donor atoms (d) Electrons in the conduction band