A pencil that is 15.7 cm long is released from a vertical position with the eraser end resting on a table. The eraser does not slip as it tips over. Treat the pencil like a uniform rod
What is the angular speed of the pencil just before it hits the table? A) 13.7 rad/s
B) 7.23 rad/s
C) 3.70 rad/s
D) 24.5 rad/s
E) 16.8 rad/s
A
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A 10-N toy rocket blasts straight up from ground level with an initial kinetic energy of 40 J. At the exact top of its trajectory, the total mechanical energy of the rocket-Earth system is 140 J
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Two capacitors with capacitances of 1.5 ?F and 0.25 ?F, respectively, are connected in parallel. The system is connected to a 40-V battery. What electrical potential energy is stored in the 1.5-?F capacitor?
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