In an experiment to obtain interference patterns on a screen, light of wavelength 600 nm was used to illuminate two slits separated by a distance of 0.034 mm. If the distance of the slits to the screen was 1.1 m, calculate the angle that the second dark fringe makes with the central axis.

6–55 refrigerant-134a enters the condenser of a residential heat pump at 800 kpa and 358c at a rate of 0.018 kg/s and leaves at 800 kpa as a saturated liquid. if the compressor consumes 1.2 kw of power, determine (a) the cop of the heat pump and (b) the rate of heat absorption from the outside air.