Object A and Object B have the same mass and are travelling at the same speed, Object A is travelling East while Object Bis travelling West. Discuss the changes in
kinetic energy of the system for each type of collision elastic and inelastic

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?

The energy equivalent of the rest mass of an electron is

Select all the correct answers. which three statements about electromagnetic radiation are true?