You hear sounds at the following decibel levels: 5 db, 10 db, 20 db, and 40 db. which sound is 10 times higher than the lowest pressure humans can hear?
40 db
10 db
20 db
5 db

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.