A parachutist of mass 50.0 kg jumps out of an airplane at a height of 1 040 m. The parachute deploys, and she lands on the ground with a speed of 4.0 m /s. How much energy was lost to air friction during this jump?
a. 4.0E+2 J
b. 8.2E+4 J
c. 4.3E+5 J
d. 5.1E+5 J
e. 6.4E+5 J
d
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Which of the identical light bulb(s) is(are) brightest when the capacitor has half its maximum charge?
a.
A
b.
B
c.
C
d.
A and B
e.
All three are equally bright.
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