In an AC circuit operating at a frequency where the phase angle with respect to the current is 30°, what happens to the phase angle if the capacitance of the circuit is increased?
a. It increases.
c. nothing
b. It decreases.
d. It decreases and can become zero.
A
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It takes light 1.3 seconds to travel from the moon to Earth and 8 minutes to travel from the sun to Earth. Which of the following statements is true?
a. The sun is 6.2 times further from Earth than the moon. b. The sun is 10 times further from Earth than the moon. c. The sun is 0.16 times further Earth than the moon d. The sun is 0.10 times further from Earth that the moon. e. The sun is 370 times further from Earth than the moon.
Draw a schematic (not to scale) of the Milky Way Galaxy face on so that you see the spiral arms. Label the spiral arms. Now draw a schematic (not to scale) of the Milky Way Galaxy edge-on, and locate and label the disk
What will be an ideal response?
Intensity: A radio transmitter is operating at an average power of 4.00 kW and is radiating uniformly in all directions. What is the average intensity of the signal 8.00 km from the transmitter?
A. 4.97 ?W/m2 B. 2.49 ?W/m2 C. 0.00497 W/m2 D. 0.00249 W/m2
The acceleration due to gravity on the Moon's surface is one-sixth that on Earth. What net force would be required to accelerate a 25.0-kg object at 5.80 m/s2 on the Moon?
a. 4.31 N b. 24.2 N c. 8.7 N d. 145 N e. 25.9 N