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31 December, 08:04

g Only something with no mass (such as light) can move at the speed of light. b. Theoretically, a particle with mass can only move faster than the speed of light if given infinite energy. c. When in a medium (such as water) light will move less than c, and observers in different inertial frames can observe that light moving at different speeds. d. Theoretically, a particle with mass can only reach the speed of light if given infinite energy. e. Choices a), c), d) are correct.

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  1. 31 December, 11:42
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    true a and c

    Explanation:

    The theory of special relativity is formulated under two postulates

    * that the laws of physics are the same in all inertial systems

    * that the speed of light in the vacuum is constant for all systems

    with these postulates the energy of a particular is

    E = K + m c²

    where the last term is called energy at rest

    a) True. only when m = 0 the energy of the particle is scientific energy

    be False. Nothing can go faster than light

    c) Right. In a material medium the speed of light depends on the measurement reference frame

    d) False For a particle of finite mass the energy must be greater than the energy at rest
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