A ball is thrown upward. After the ball is released upward and is in the air, its speed
1.remains the same.
2.increases.
3.decreases and then increases.
4.increases and then decreases.
3
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An object may be electrically neutral, but regions may be charged by ______________
Fill in the blank(s) with correct word
Power: A series circuit contains a 20-? resistor, a 200-mH inductor, a 10-?F capacitor, and an ac power source. At what frequency should the power source drive the circuit in order to have maximum power transferred from the driving source?
A. 0.45 kHz B. 0.17 kHz C. 0.28 kHz D. 0.96 kHz E. 0.11 kHz
It is said that electric charge is conserved, which means that electric charge
A) may occur in an infinite variety of quantities. B) is a whole number multiple of the charge of one electron. C) will interact with neighboring electric charges. D) can be neither created nor destroyed. E) is sometimes negative.
Determine the equivalent capacitance of the combination shown when C = 45 ?F.
A. 28 ?F B. 36 ?F C. 52 ?F D. 44 ?F E. 23 ?F