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16 May, 17:11

neutrons have a mass of 1.675*10 to the negative 27th. determine the kinetic energy of a neutron traveling 20. 5% of the speed of light

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  1. 16 May, 17:25
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    The K. E of the neutron is, K. E = 5.025 x 10⁻²⁰ J

    Explanation:

    Given data,

    The mass of the neutron, m = 1.675 x 10⁻²⁷ kg

    The velocity of the neutron, v = 20.5% of c

    The speed of light, c = 3 x 10⁸ m/s

    v = 20.5% of c

    = 3 x 10⁸ x 20 / 100

    = 6 x 10⁷ m/s

    The K. E of the neutron is,

    K. E = ½ mv²

    = ½ x 1.675 x 10⁻²⁷ x 6 x 10⁷

    = 5.025 x 10⁻²⁰ J

    Hence, the K. E of the neutron is, K. E = 5.025 x 10⁻²⁰ J
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