Which of the following charge distributions has the lowest potential energy?
2
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Sound is a(n)
a. longitudinal wave. b. electromagnetic wave. c. transverse wave. d. standing wave.
The wavelength of a ruby laser is 694.3 nm. What is the energy difference between the two energy states involved in laser action?
A) 1.537 eV B) 1.646 eV C) 1.786 eV D) 1.812 eV E) 3.572 eV
Molecular Speeds: A 0.50 m3 gas tank holds 3.0 moles of ideal diatomic nitrogen gas at a temperature of 350 K. The atomic mass of nitrogen is 14.0 g/mol. What is the rms speed of the molecules? (The Boltzmann constant is 1.38 × 10-23 J/K, NA = 6.022 × 1023 molecules/mol.)
A. 560 B. 790 C. 390 D. 21 E. 97
Waves of amplitudes 0.4 m and 0.3 m interfere while traveling in the same direction with the same speed. If the wavelengths are the same, what are the resulting largest and smallest amplitudes possible?
1.0.7 m and 0.5 m 2.0.7 m and 0.1 m 3.0.5 m and 0.35 m 4.0.5 m and 0.1 m