Aphoton moving in the +x-direction, scatters off a free stationary electron. the wavelength of the incident photon is 0.0250 nm. after the collision, the electron moves at an angle α below the +x-axis, while the photon moves at an angle θ 65.3° above the +x-axis. (for the purpose of this exercise, assume that the electron is traveling slow enough that the non-relativistic relationship between momentum and velocity can be used.) (a) what is the angle α (in degrees)? o counterclockwise from the +x-axis (b) determine the speed of the electron (in m/s) m/s

Asample of a gaseous substance changes into a liquid

The velocity of car is 80.0 miles per hour. what is the velocity of car in meters per second? (1 km -0.621 miles) m/s

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?