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.
Is the synthesis of ozone, O3, from oxygen, 02, an example of an exothermic or endothermic reaction?
A) exothermic because ultraviolet light is emitted during its formation B) endothermic because ultraviolet light is emitted during its formation C) exothermic because ultraviolet light is absorbed during its formation D) endothermic because ultraviolet light is absorbed during its formation
Coulomb's law is similar in form to
A. all of Newton's laws of motion B. Newton's law of gravity C. Ohm's law D. Faraday's law
State Bernoulli's principle
What will be an ideal response?