Let a particle of charge e and rest mass m, initially at rest in the laboratory, scatter a photon of initial frequency v_i. this is called compton scattering. suppose the scattered photon comes off at an angle theta from the incident direction. use conservation of four-momentum to deduce that the photon's final frequency v_f is given by 1/v_f = 1/v_i + h (1-cos theta/m)

Which are examples of projectile motion? choose all that apply a. a soccer ball rolling across the ground in the northeast direction b. a car turning a corner, so it is heading south c. a javelin flying through the air d. a tennis ball lobbed over the net

Steam is generated in a boiler of a cogeneration plant at 10 mpa and 450°c at a steady rate of 5 kg/s. in normal operation, steam expands in a turbine to a pressure of 0.5 mpa and is then routed to the process heater, where it supplies the process heat. steam leaves the process heater as a saturated liquid and is pumped to the boiler pressure. in this mode, no steam passes through a condenser, which operates at 20 kpa. (a) determine the power produced in the turbine and the rate at which process heat is supplied in this mode. (b) determine the power produced in the turbine and the rate of process heat supplied if only 60 percent of the steam is routed to the process heater and the remainder is expanded to the condenser pressure. (3.32 mw; 9.69 mw; 4.25 mw; 5.82 mw)

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?