What is the stored energy in a 1.5-mH coil carrying a current of 4.0 A?
a. 12 × 10^-3 J
c. 8.0 × 10^-3 J
b. 4.0 × 10^-3 J
d. 2.0 × 10^-3 J
A
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The general heliocentric model proposed by Copernicus was appealing, and eventually became preferred, because
A. it explained why we do not observe stellar parallax. B. it was more aesthetically pleasing than the complicated Ptolemaic model. C. it made more accurate predictions than the Ptolemaic model. D. it replaced Earth with the Sun as the center of the solar system.
A uniform solid sphere rolls without slipping along a horizontal surface. What fraction of its total kinetic energy is in the form of rotational kinetic energy about the CM?
What will be an ideal response?
The electric power of a lamp that carries 2 A at 120 V is
A) 1/6 W. B) 2 W. C) 60 W. D) 20 W. E) 240 W.
When the Moon appears on an observer's meridian at midnight, it is called a(n) ______________ moon
Fill in the blank(s) with correct word