Phase Angles: A 50.0-mH inductor is connected in series with a 2500-? resistor in an ac circuit. What is the phase angle at 3000 Hz?
A. 20.7°
B. -20.7°
C. -75.9°
D. 75.9°
E. 90.0°
Answer: A
Physics & Space Science
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700 J of heat are added to 12 moles of an ideal monatomic gas at constant volume. What is the change in temperature?
A) 4.7 K B) 5.2 K C) 5.8 J D) 6.8 K E) 9.3 K
Physics & Space Science
Compared to an identical ice cube exposed to air at room temperature, an ice cube wrapped in a wool blanket remain frozen for
1.less time. 2.the same length of time. 3.a longer time.
Physics & Space Science
Most water of the Earth is stored in
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Physics & Space Science