Assume that (i) the energy released per fission event of 235U is 194 MeV, and (ii) 33% of the nuclear energy released in a power plant is ultimately converted to usable electrical energy. Approximately how many fission events will occur in one second in order to provide the two-GW electrical power output of a typical power plant? (1 eV = 1.6 × 10^?19 J)
a. 4E+23 fission/s
b. 2E+20 fission/s
c. 6E+25 fission/s
d. 2E+15 fission/s
e. 8E+17 fission/s
b
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Young's Modulus: A solid steel column is 4.0 m long and 0.20 m in diameter. Young's modulus for this steel is 2.0 × 1011 N/m2. By what distance does the column shrink when a 5000-kg truck is supported by it?
A. 8.0 × 10-7 m B. 3.2 × 10-6 m C. 7.8 × 10-6 m D. 3.1 × 10-5 m
The span of time required for the radioactive decay of half the parent nuclei in a sample is known as the ______________
Fill in the blank(s) with correct word
The period of a satellite circling planet Nutron is observed to be 84 s when it is in a circular orbit with a radius of 8.0 × 10^6 m. What is the mass of planet Nutron?
a. 6.2 × 10^28 kg b. 5.0 × 10^28 kg c. 5.5 × 10^28 kg d. 4.3 × 10^28 kg e. 3.7 × 10^28 kg
Radio lobes are held together by their magnetic fields
Indicate whether the statement is true or false