The energy of an oscillating atom in a blackbody can be a any value within a certain limited range
Indicate whether the statement is true or false
F
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What is the power factor for a series ac circuit containing a 50-? resistor, a 10-?F capacitor, and a 0.45-H inductor, when connected to a 60-Hz power supply?
A) 0.00 B) 0.46 C) 1.0 D) 0.79
The percentage composition by mass of nitrogen dioxide is approximately
a. 43% N and 57% O. b. 33% N and 67% O. c. 30% N and 70% O. d. 47% N and 53% O.
Free Fall: A laser is thrown upward with a speed of 12 m/s on the surface of planet X where the acceleration due to gravity is 1.5 m/s2 and there is no atmosphere. What is the maximum height reached by the laser?
A. 8.0 m B. 18 m C. 48 m D. 144 m
A nucleus undergoes radioactive decay, emitting a gamma ray. Which of the following statements is true?
A. A nuclear proton changes into an electron-positron pair. B. Both daughter and parent nuclei have the same atomic number. C. The daughter nucleus is more massive than the parent. D. The daughter nucleus has more neutrons than the parent.