Which of the following will increase the capacitance between the plates of a parallel plate capacitor?
A) Increase the charge on the plates.
B) Decrease the potential between the plates.
C) Increase the potential between the plates.
D) Introduce a dielectric material between the plates.
E) none of the above
D
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Which one of the following statements is true?
A. Temperatures differing by 25? on the Fahrenheit scale must differ by 45? on the Celsius scale B. 40 K corresponds to ?40? C C. Temperatures which differ by 10? on the Celsius scale must differ by 18? on the Fahrenheit scale D. Water at 90? C is warmer than water at 202? F E. 0? F corresponds to ?32? C
Microscopic slush in ice water tends to make water density
A) lower. B) higher. C) sustain at one value.
Active galactic nuclei are usually powered by supermassive black holes
Indicate whether the statement is true or false
Astronomers measure stellar distances in three different units. The smallest of these is
a. the light-year. b. the absolute magnitude. c. the astronomical unit. d. the parsec.