It would be a) 2 electrons
Index of refraction for any material = speed of light /speed of light in the material.
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A beta particle is identical to : an electron
Both of beta particle and electron are high in energy and move in high speed.
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Answer:
i think the answer is "B"
Explanation:
the particles in a gas are more far apart and have more kinetic energy than liquid because they are more close together and have less kinetic energy than gas.