A series LC circuit contains a 100 mH inductor, a 36.0 mF capacitor and a 12 V battery. The frequency of the electromagnetic oscillations in the circuit is
a. 5.73 × 10^?4 Hz.
b. 9.55 × 10^?3 Hz.
c. 0.442 Hz.
d. 2.65 Hz.
e. 44.0 Hz.
d
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The resolving power of an optical telescope with a diameter of 232 cm is
a. 0.05 arc seconds. b. 232 arc seconds. c. 2.32 arc seconds. d. 5 arc seconds. e. 11.6 arc seconds.
Gamma rays are photons with very high energy. How many visible-light photons with a wavelength of 500 nm would you need to equal the energy of a gamma-ray photon with energy
A) 1.0 × 106 B) 1.4 × 108 C) 6.2 × 109 D) 3.9 × 103
Calculate the reaction energy (Q value) for the reaction 7Li + 1H ? 4He + 4He, given the following masses:
7Li: 7.016005 u 1H: 1.007825 u 4He: 4.002603 u (1 u = 931.5 MeV/c2) A) 15.37 MeV B) 17.35 MeV C) 17.53 MeV D) 13.57 MeV E) 13.35 MeV
Gas falling into a black hole becomes ____. a. hot, due to an increase in speed and molecular collisions b. hot, due to radiation from the black hole c. compacted into solid matter by tidal forces
d. cool, due tothe loss of gravitational energy. e. cool, due tothe emission of infrared photons