As more resistors are added in series, the equivalent resistance of the circuit approaches infinity. In contrast, as more resistors are added in parallel, the equivalent resistance

1. approaches infinity.
2. approaches zero.
3. becomes zero.
4. approaches 1 ?.


2

Physics & Space Science

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Four unequal resistors are connected in series with each other. Which one of the following statements is correct about this combination?

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A 4.00-kg block rests on a 30.0° incline as shown in the figure. If the coefficient of static friction between the block and the incline is 0.700, what magnitude horizontal force F must act on the block to start it moving up the incline?

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A person with a mass of 60 kg climbs up to a diving board 4 meters above a swimming pool. (a) How much work does the person do? (b) What is the diver's kinetic energy upon entering the water after diving off?

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