When light travels from a medium it moves faster in (such as air) to a medium it moves slower in (such as glass) its velocity decreases. what else happens? a) the frequency increases but the wavelength remains the same. b) the wavelength increases but the frequency remains the same. c) the wavelength decreases but the frequency remains the same. d) the frequency decreases but the wavelength remains the same.

What color would an object that reflects green and blue light appear to be in white light? a. blue b. cyan c. magenta d. black

Steam is generated in a boiler of a cogeneration plant at 10 mpa and 450°c at a steady rate of 5 kg/s. in normal operation, steam expands in a turbine to a pressure of 0.5 mpa and is then routed to the process heater, where it supplies the process heat. steam leaves the process heater as a saturated liquid and is pumped to the boiler pressure. in this mode, no steam passes through a condenser, which operates at 20 kpa. (a) determine the power produced in the turbine and the rate at which process heat is supplied in this mode. (b) determine the power produced in the turbine and the rate of process heat supplied if only 60 percent of the steam is routed to the process heater and the remainder is expanded to the condenser pressure. (3.32 mw; 9.69 mw; 4.25 mw; 5.82 mw)

Calculate the mass of an object that has a momentum of 100kg x m/sec and velocity of 4 m/sec