Question

A proton has a kinetic energy of 7.5 MeV. What is the speed of an alpha...

A proton has a kinetic energy of 7.5 MeV. What is the speed of an alpha particle that has the same DeBroglie wavelength as the proton? The mass of the alpha particle is 6.65E-27 kg.

9517 m/s

9.53E6 m/s

1833 m/s

2.38E13 m/s

0.747 m/s

0 0
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Answer #1

KE = 7.5 meu : 4. г х ( 6 см - 2 - 1. 2 x |о с Р: Г. 2 kБ ( momentum) here М - mass of Proton 2 (4.67 xid**)(1.2 x 1-12) Р= 6

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