What is the average power dissipation in a series RC circuit if R = 5.00 k?, C = 2.00 ?F, and V = 170 cos (300t)?
A. 0.930 W
B. 2.60 W
C. 28.2 W
D. 157 W
E. 5.20 W
Answer: B
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Radioactivity Basics: In ?- decay, the number of protons in the nucleus is
A. decreased by 1. B. decreased by 2. C. increased by 1. D. increased by 2. E. remains unchanged.
What is the average orbital speed of the Earth around the Sun? (Note: r = 1.5 x 1011 m and P = 3.16 107 s)
A. About 30 km/s. | ||
B. About 4.7 km/s. | ||
C. About 9.8 m/s2. | ||
D. 365 days. | ||
E. 1,000 km/s. |
The principle of equivalence tells us that
A) mass and energy are forms of each other. B) space and time are forms of each other. C) electricity and magnetism are forms of each other. D) observations made in an accelerating reference frame are indistinguishable from those made in a gravitational field. E) all of the above
A(n) _________is the charge in coulombs on a mole of positive ions of unit charge.
Fill in the blank(s) with the appropriate word(s).