How many lines/cm should be present in a diffraction grating to produce the first bright fringe at an angle of 4o when yellow light of wavelength 580 nm passes through it?

Air initially at 0.75 bar, 1000 k, and occupying a volume of 0.12 m^3 undergoes two processes. process 1-2: the air is compressed isothermally until the volume is halved. process 2-3: the air undergoes a constant pressure process until the volume is halved again. assume ideal gas behavior. a) determine the mass of the air, in kg. b) the work and the heat transfer for each of the two processes, in kj. (100 kj = 1 bar . m^3)

What is a costume plot? why is it important to a film or theater production?

Which is a substance that can be separated by physical means and is not the same throughout