A pressure transducer has an output impedance of 120 and is to be connected to an amplifier. What must be the minimum impedance of the amplifier if we want to keep the loading error less than 0.1%?

Heena wants to measure the volume of a ball that is 24 cm across. how should she set up her equation?

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.

A90db sound wave strikes an eardrum whose area is 5.0×10^-5m^2. how much energy is absorbed by the eardrum per second