Sin311.40 * 10 m 2x - vt4, pass through a slit 36.18 . parallel rays of monochromatic light with wavelength 36.10 cp light waves, for which the electric field is given by 568 nm illuminate two identical slits and produce an interfer- ence pattern on a screen that is 75.0 cm from the slits. the centers y max and produce the first dark bands at ±28.6° from the center of the diffraction pattern. (a) what is the frequency of this light? (b) how wide is the slit? (c) at which angles will other dark bands occur?

Use the data provided to calculate the gravitational potential energy of each cylinder mass. round your answers to the nearest tenth. 3 kg: kj 6 kg: kj 9 kg: kj

Asmall metal bar, whose initial temperature was 10° c, is dropped into a large container of boiling water. how long will it take the bar to reach 70° c if it is known that its temperature increases 2° during the first second? (the boiling temperature for water is 100° c. round your answer to one decimal place.) sec how long will it take the bar to reach 98° c? (round your answer to one decimal place.)

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?