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To determine the minimum speed of the electrons required for Cherenkov light to be emitted in water with an index of refraction of 1.33, we need to use the Cherenkov radiation formula:
v_min = c / n
where:
- v_min is the minimum speed of the electrons,
- c is the speed of light in a vacuum (which is approximately 3.00 x 10^8 meters per second),
- and n is the index of refraction of the medium (in this case, water with an index of refraction of 1.33).
Substituting the values into the formula:
v_min = (3.00 x 10^8 m/s) / 1.33
Calculating this, we find:
v_min ≈ 2.26 x 10^8 meters per second
Therefore, the minimum speed of the electrons required for Cherenkov light to be emitted in water with an index of refraction of 1.33 is approximately 2.26 x 10^8 meters per second.