When a capacitor has a charge of magnitude 80 ?C on each plate the potential difference across the plates is 16 V. How much energy is stored in this capacitor when the potential difference across its plates is 42 V?
A. 1.0 mJ
B. 4.4 mJ
C. 3.2 mJ
D. 1.4 mJ
E. 1.7 mJ
Answer: B
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How much energy is released in this process? (1 u = 931.5 MeV/c2)
A. 4.24 MeV B. 3.76 MeV C. 4.87 MeV D. 5.05 MeV E. 5.39 MeV
Thermal Expansion: The volume coefficient of thermal expansion for gasoline is 950 × 10-6 K-1. By how many cubic centimeters does the volume of 1.00 L of gasoline change when the temperature rises from 30°C to 50°C?
A. 6.0 cm3 B. 12 cm3 C. 19 cm3 D. 37 cm3
A 0.500-H inductor is connected into a 110 V rms 60.0-Hz voltage source, with an ammeter in series. What is the rms value of the current through the inductor?
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One of the first atomic bombs released energy equivalent to that of 20,000 tons of TNT explosive
How much mass was converted to energy by this explosion, given that 1000 tons of TNT produce 4.3 × 1012 J of energy. Incidentally, modern H-bombs have energy yields 1000 times as much! (c = 3.0 × 108 m/s)