beam having photon of energy 480 k eV is incident on a foil of aluminum. If the photon is scattered at 45°, then calculate the energy of the recoil electron.

Two polarizers are oriented at 24.0∘ to one another. light polarized at a 12.0-degree angle to each polarizer passes through both. what is the transmitted intensity (%)?

How many atoms of nitrogen are in the chemical formula ni(w on

Aturntable that spins at a constant 74.0 rpm takes 3.10 s to reach this angular speed after it is turned on. find its angular acceleration (in rad/s2), assuming it to be constant, and the number of degrees it turns through while speeding up.