Atoms in crystals are typically separated by distances of 0.10 nm
What kinetic energy must a nonrelativistic electron have, in electron-volts, in order to have a wavelength of 0.10 nm? (melectron = 9.11 × 10-31 kg, 1 eV = 1.60 × 10-19 J, h = 6.626 × 10-34 J ? s)
150 eV
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If the temperature of a volume of ideal gas increases for 100°C to 200°C, what happens to the average kinetic energy of the molecules?
a. It halves. b. It doubles. c. It increases but less that double. d. It increases more than double.
A 60.0-Hz ac generator with a peak voltage of 110 V drives a series RL circuit with R = 10.0 ? and L = 10.0 mH. The peak current in the circuit is
a. 0.963 A. b. 10.3 A. c. 11.0 A. d. 11.9 A. e. 29.2 A.
When ice melts, its temperature __________
Fill in the blank(s) with correct word
The most famous case of a more massive hot star orbiting with a more evolved but presently less massive red giant is the eclipsing binary:
A) Aldeberan. B) Antares. C) Algol. D) Alberio. E) Altair.