In the fissioning of uranium, the typical amount of energy released per nucleon is
A) 0.025 eV.
B) 100 MeV
C) 0.9 MeV.
D) 200 MeV.
E) 10 MeV
C
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Saturn's rotation is fast and differential, much like Jupiter's
Indicate whether the statement is true or false
When strong solar winds are displaced poleward by our magnetic fields, we get
A) the Van Allen radiation belts. B) intense auroral displays. C) sunspots. D) hurricanes in the tropics. E) droughts and dust bowls in the American West.
Three +3.0-?C point charges are at the three corners of a square of side 0.50 m. The last corner is occupied by a -3.0-?C charge. Find the magnitude of the electric field at the center of the square. (k = 1/4??0 = 8.99 × 109 N • m2/C2)
What will be an ideal response?
Suppose that the speed of an electron traveling 2000 m/s is known to an accuracy of 1 part in 105 (i.e., within 0.001%). What is the greatest possible accuracy within which we can determine the position of this electron?
A) 2.9 mm B) 5.8 mm C) 8.7 mm D) 1.2 cm E) 1.6 cm