An AC voltage source, with a peak output of 200 V, is connected to a 25-W resistor. What is the rate of energy dissipated due to heat in the resistor?
a. 566 W
c. 800 W
b. 400 W
d. 200 W
C
Physics & Space Science
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Which of the following elements is the physical basis of life on Earth?
A) Nitrogen B) Oxygen C) Carbon D) Hydrogen
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The surface of Europa is most like the Earth's
A) Arctic Ocean. B) Himalayan peaks. C) tundra. D) deserts. E) South Pole.
Physics & Space Science
A circular coil (radius = 0.25 m) has 143 turns and is in a uniform magnetic field. If the orientation of the coil is varied through all possible positions, the maximum torque on the coil by magnetic forces is 0.29 N?m when the current in the coil is 2.7 mA. What is the magnitude of the magnetic field?
a. 5.47 T b. 0.304 T c. 3.83 T d. 137 T
Physics & Space Science
Halley's Comet returns about every ______________ years
Fill in the blank(s) with correct word
Physics & Space Science