Two different 1 F capacitors which each have a gap of 10 um. Capacitor one has rubber between the plates (dielectric constant = 3.0), whereas capacitor 2 has plexiglass between the plates (dielectric constant = 3.4). How many times larger is the surface area on capacitor 1 compared to the surface area on capacitor 2? a. A1 -0.88 A2 b. A1 = 3.32 A2 c. A1 = 1.13 A2 d. A1 -0.30 AZ

Which of the following represents an upside-down image? o a. +doo b. -doo c. +mo d.-m

Acoal-fired plant generates 600 mw of electric power. the plant uses 4.8 x 10^6 kg of coal each day, and the heat of combustion of coal is 3.3x 10^7 j/kg. the steam that drives the turbines is at a temperature of 300° c, and the exhaust water is at 37° c. (a) what is the overall efficiency of the plant for generating electric power? (b) how much thermal energy is exhausted each day? (c) what is the change in entropy of the universe for this heat engine? (d) using the same heat reservoirs, what is the maximum possible (carnot) efficiency for a heat engine?

Any color picture tube and electric field exerts a net force of magnitude 1.68x 10^-13 n on an electron the rest mass of an electron is 9.11 x 10^-13 what is the electron acceleration?