Question

(6%) Problem 17: A photo of 520-THz light strikes a stationary atomic particle of mass 8.6 x 10- kg. *33% Part(a) Assuming the photon is absorbed, find the resulting speed of the particle, in meters per second. Grade Summary Deductions Potential 100% Submissions Attempts remaining: 9 ( per attempt) detailed view sin cos tano cotano) asin acoso atan) acotan sinho cosh() tanh) | Coanh) O Degrees O Radians (I give up! Submit Hint Feedback: 3. deduction per feedback. Hints: 3% deduction per hint. Hints remaining: 3 33% Part (b) Now assume that, instead of being absorbed, the photon reflects off the particle at an angle of 8.1 away from the photon's incident direction. Assume the photon's frequency remains the same, although that would not be strictly correct. Find the resulting speed of the particle, in meters per second 4 33% Part (c) Anatomic system might absorb an incident photon and then emit a second photon. If the particle of part (a), after absorbing the photon as described there, emits a photo of 450-THz light in the opposite direction to the first photon, find the final speed of the particle, in meters

Answer 1

enesgy of photon t = h2 given V=520TH2 = 5200 10² Hz ha 6.626 X 15 34 m² kg/s E- (6.626X1634)x 520x 1012 J = 3.44x10''J energy completely absorbed by particle E = | mv² ; m= 8.6x1026 kg 3.1471019 = {x(8-6410-26) v2 *v2 = 7.30x606 V= 3713X106 - 2.7x10 m/s U2 → v = √7.34 = 2:7 X