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olga_2 [115]
2 years ago
10

Help me with this review question please.

Physics
1 answer:
QveST [7]2 years ago
6 0

Answer:

K E=( mv²)/2

=(60×3.5²)/2

=367.5J

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An alpha particle (a helium nucleus, consisting of two protons and two neutrons) has a radius of approximately 1.6 × 10-15 m. A
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9.96x10^-20 kg-m/s

Explanation:

Momentum p is the product of mass and velocity, i.e

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Alpha particles, like helium nuclei, have a net spin of zero. Due to the mechanism of their production in standard alpha radioactive decay, alpha particles generally have a kinetic energy of about 5 MeV, and a velocity in the vicinity of 5% the speed of light.

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The mass of an alpha particle is approximately 6.64×10−27 kg

Therefore,

P = 1.5x10^7 x 6.64×10^−27

P = 9.96x10^-20 kg-m/s

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