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find the energy, rest mass, speed, wavelength, and momentum for both a 2.2 eV photon and a 2.2 eV electron
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Photon
2.2 ev X 1.6x10-19= 3.52 x10 -19 J

P=E/C
P= 3.52 x10 -19 / 3 x 108
P= 1.17 x10 -27

f= E/h
=3.52 x10 -19 /6.63x10-34
F=5.31x1014

v=f?
v= 3x108 m/s

?= h/P
=6.63X10-34/1.17X10-27
=5.66X10-7 m

for electron

Ek=1/2mv2
3.52 x 10-19=1/2 (9.11x10-31)v2
v= ?[(3.52 x 10-19)(2)/9.11x10-31]
v=8.79x105 m/s ( Unsure whether I can use this equation to determine speed)

?=h/mv
= 6.63x10-34/(9.11X10-31)(8.79X105)
=8.28X10-10 m

p= h/?
=6.63x10-34/8.28X10-10
=8x10-25 kgm/s
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