An alpha particle has a mass of 6.64 × 10-27 kg and a charge of 3.20 × 10-19 C, and it is traveling at 0.9650c
(c = 3.00 × 108 m/s), 1 eV = 1.60 × 10-19 J)
(a) What is its rest energy (in GeV)?
(b) What is its total energy (in GeV)?
(c) What is its kinetic energy (in GeV)?
(a) 3.74 GeV (b) 14.2 GeV (c) 10.5 GeV
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A filtergram is a photograph of the sun's surface made
a. in a band of wavelengths in the infrared. b. in a band of wavelengths in the ultraviolet. c. using the Zeeman effect. d. with only those photons emitted in a specific spectral line. e. none of the above
Tritium is radioactive with a half-life of 12.33 years decaying into 3He with low-energy electron emission. If we have a sample of 2.35 × 10^19 tritium atoms, what is its activity in decays/second? (1 year = 3.16 × 10^7 s)
a. 6.64 × 10^7/second c. 3.69 × 10^8/second b. 5.35 × 10^9 /second d. 4.18 × 10^10/second
A 120-V rms voltage at 60 Hz is applied across an RC circuit. The rms value of the current in the circuit is 0.60 A, and it leads the voltage by 60°. What is the resistance in this circuit?
A) 100 ? B) 60 ? C) 150 ? D) 200 ? E) 120 ?
Unpolarized light is incident upon two polarization filters that do not have their transmission axes aligned. If of the light passes through this combination of filters, what is the angle between the transmission axes of the filters?
A) 53° B) 73° C) 85° D) 80°