Energy Conservation With Conservative Forces: A toy rocket that weighs 10 N blasts straight up from ground level with an initial kinetic energy of 40 J. At the exact top of its trajectory, its total mechanical energy is 140 J. To what vertical height above the ground does it rise, assuming no air resistance?

A. 1.0 m
B. 10 m
C. 14 m
D. 24 m


Answer: B

Physics & Space Science

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Which of the following performance domains includes the athletic trainer's responsibility to educate others?

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A grating is made with 600 slits per millimeter. What is the slit separation?

A. 600 nm
B.
C.
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E. 916 nm

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A 1.5-H inductor is connected in series with a 200-? resistor through a 15-V dc power supply and a switch. If the switch is closed at t = 0 s, what is the maximum energy stored by the inductor?

A) 1.2 mJ B) 2.2 mJ C) 3.2 mJ D) 4.2 mJ E) 5.2 mJ

Physics & Space Science