Red light with a wavelength of 7.50 x 10-7 m m and blue light with a wavelength of 5.0 x 10-7 m are beamed at a double slit with a separation of 5.00 x 10-6 m m. the third order maximums for the different colours occur at different spots. what is the angle between the second order maximums?

Air is contained in a variable-load piston-cylinder device equipped with a paddle wheel. initially, air is at 400 kpa and 17°c. the paddle wheel is now turned by an external electric motor until 75 kj/kg of work has been transferred to air. during this process, heat is transferred to maintain a constant air temperature while allowing the gas volume to triple. calculate the required amount of heat transfer in kj/kg.