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1
Find the momentum, kinetic energy, and total energy of a
proton moving at a speed of 0.756c.
Helping Tools
No.1
2
No.2
No.3
3
No.4
4
Solution
2
2 2
2 2
2
938.27205 0.756
(0.756 )
1 1
709.33 709.33 709.33
1 0.571 0.429
1 (0.756)
709.33
1082.95
0.655
Momentum
MeV
X c
mu c
p
u c
c c
MeV MeV MeV
c c c
MeV
MeV
c
c
= =
? ?
= = =
?
?
= =
5
2
2
2
Kinetic Energy
1
938.27
938.27
0.655
1432.47 938.27
494.203
mc
K mc
u
c
MeV
MeV
MeV MeV
MeV
= ?
?
= ?
= ?
=
6
2
2
2
2
Total Energy
938.27
0.655
1
1432.47
mc MeV
E K mc
u
c
MeV
= + = =
?
=
The End

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