A 25 nH inductor is in an AC circuit whose generator has an rms voltage of 12 V. At what frequency must the generator drive the circuit if the rms current is to be 2.0 mA?
A. 0.15 MHz
B. 38 GHz
C. 0.96 MHz
D. 240 GHz
B. 38 GHz
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A. collect a lot of light and have high resolution B. collect less light, and have poor resolution C. collect a lot of light, but have poor resolution D. collect less light, but have higher resolution
It is now believed the majority of mass for most galaxies lies in their dark halos
Indicate whether the statement is true or false
A system consisting of a negatively-charged particle and an electric field
A. gains potential difference and kinetic energy when the charged particle moves in the direction of the field. B. loses electric potential energy when the charged particle moves in the direction of the field. C. gains kinetic energy when the charged particle moves in the direction of the field. D. gains electric potential energy when the charged particle moves in the direction of the field. E. gains potential difference and electric potential energy when the charged particle moves in the direction of the field.
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A) solar radiation. B) terrestrial radiation. C) short-wave radiation.