Light with a wavelength of 400.0 nm passes through a 1.00 x 104 lines/cm diffraction grating. What is the second-order angle of diffraction

Asher cycles 12 miles in 16 hours. what is his speed?

Alinearly polarized electromagnetic wave has an average intensity of 196 w/m^2. this wave is directed towards two ideal polarizers (in real polarizers, transmission is also effected by reflection and absorption). polarizer a is oriented with its transmission axis at an angle of θ_1=20.8∘ with the incident electric field. polarizer b has its axis at an angle of θ_2=63.0∘ with the incident electric field. what is the average intensity of the wave after it passes through polarizer a? what is the average intensity of the wave after it passes through polarizer b? suppose that the two polarizers a and b are interchanged. what would the average intensity be after passing through both polarizers?

Individuals who live below the poverty line get seriously ill more often than those who do not what could be the hidden variable in this situation?