Alice is floating freely in her spacecraft, and you are accelerating away from her with an acceleration of 1g. Suppose you claim that you are feeling the effects of a gravitational field. How can you explain the fact that Alice is weightless?
A) She is weightless because she is moving at constant velocity.
B) She is weightless because she is in a not moving.
C) She is weightless because she is in free-fall.
D) If you are in a gravitational field, then she cannot be weightless.
C) She is weightless because she is in free-fall.
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An electric heater draws an average power of 1100 watts when plugged into a 110 V rms outlet. Calculate the resistance of the heater and the rms current
a. 11 ?, 10 A (rms) b. 110 ?, 10 A (rms) c. 10 ?, 11 A (rms) d. 10 ?, 110 A (rms) e. 0.09 ?, 11 A (rms)
The separation of charges within a polar molecule is called a(n)
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A disk and a hoop of the same mass and radius are released at the same time at the top of an inclined plane and roll without slipping. Which object reaches the bottom of the incline first?
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