Two rows of fluorescent lamps are installed in an office on the same branch circuit, with each row drawing 12.5 amperes. the source voltage is 277 volts, and the line or total circuit resistance is 0.5 ω. the wire used has a constant (k) of 12.6. what is the voltage at the load? (round the final answer to one decimal place.)

The amount of heat required to change liquid water to vapor at its boiling temperature is 2256 kj/kg. the amount of heat required to change liquid mercury to its vapor state at its boiling temperature is 295 kj/kg. one kg of each substance is currently at its boiling point. how will the amount of thermal energy required to change each substance from a liquid to a gas differ?