Aphoton of wavelength 0.1382 nm travels in the positive x direction and scatters from a stationary electron placed at the origin. the wavelength of the scattered photon is 0.1403 nm. (a) what is the final speed of the electron? m/s (b) what angle does the electron's final velocity make with the x axis? degrees

Ascrew incorporates which other simple machine? lever wheel and axle inclined plane pulley

Which of the following is the phase that results when the moon is on the opposite side of the earth from the sun? a. quarter moon b. crescent moon c. new moon d. full moon

Complete these sentences. if a roller coaster train has a potential energy of 1,500 j and a kinetic energy of 500 j as it starts to travel downhill, its total energy isj. once the roller coaster train gets closer to the bottom of the hill, its kinetic energy increases to 1,100 j, and its potential energy decreases to j. when the train reaches the bottom of the track and is traveling along the ground, its kinetic energy isj.