Just as water flows from high to low pressure, electric charge flows from
A) high to low voltage.
B) high charge concentration to low charge concentration.
C) high resistance to low resistance.
D) all of the above
E) none of the above
Answer: A
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Ann the Astronaut weighs 65.0 kg. She is space walking outside the space shuttle and pushes a 350.0-kg satellite away from the shuttle at 0.70 m/s. What speed does this give Ann as she moves toward the shuttle?
a. 0.13 m/s b. 3.8 m/s c. 590 m/s d. 290 m/s e. 7.7 m/s
A 5.0-kg object is pulled along a horizontal surface at a constant speed by a 15-N force acting 20° above the horizontal. How much work is done by this force as the object moves 6.0 m?
a. 78 J b. 82 J c. 85 J d. 74 J e. 43 J
Our solar system consists of
A) the Sun and all the objects that orbit it. B) the Sun and the planets, and nothing else. C) a few hundred billion stars, bound together by gravity. D) the Sun and several nearby stars, as well as the planets and other objects that orbit these stars.
A ____ is believed to occur when energy, stored in a twist in the solar magnetic field above a sunspot, is suddenly released
a. solar flare b. supergranule c. spicule d. coronal hole e. none of the above