A 15-W compact fluorescent light bulb (CFL) produces the same amount of light as a 60-W incandescent while using only one fourth the power. Over the 9,000-hr lifetime of one CFL, compute carbon, SO2 , and particulates emissions what would be saved if one CFL replaces incandescent and the electricity comes from the coal fired

If an inclined plane is 5 m long and 2 m high, what is its mechanical advantage? a. 2.5 b. 3 c. 7 d. 10

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Which configuration would produce an electric current? a) rotate a coil of copper wire between two magnets. b) connect a wire between a copper and zinc strip sitting in a beaker of water. c) connect a wire to the (+) positive end of a battery and the other end to a light bulb. d) connect a wire to the negative end of a battery and the other end to a light bulb.