LC Circuits: A simple circuit consists only of of a 1.0-?F capacitor and a 15-mH coil in series. At what frequency will this circuit oscillate?
A. 15 kHz
B. 1.3 kHz
C. 0.77 kHz
D. 67 Hz
Answer: B
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Alpha titanium alloys with concentrations of aluminum greater than 5 percent can be precipitation-hardened with the precipitate _________.
Fill in the blank(s) with the appropriate word(s).
What is Hawking radiation?
A) a hypothesized way for black holes to gradually shrink in mass B) a type of high-energy radiation that comes from inside a black hole's event horizon C) a type of radiation coming from objects supported by degeneracy pressure D) a type of radiation that we have detected so far only with infrared telescopes in space
The number of ____ in the nucleus determines what element the nucleus is
a. protons b. electrons c. neutrons d. None of these determines the element. e. All of these determine the element.
Thin Films: A 360-nm thick oil film floats on the surface of a pool of water water. The indices of refraction of the oil and the water are 1.5 and 1.33, respectively. When the surface of the oil is illuminated from above at normal incidence with white light, what are the two wavelengths of light between 400 nm to 800 nm wavelength that are most strongly reflected?
A. 410 nm and 700 nm B. 430 nm and 720 nm C. 450 nm and 740 nm D. 470 nm and 760 nm E. 490 nm and 780 nm