Q 2 Within a certain distance of a black hole, not even light can escape. This distance is called the "event horizon." (This was discussed in the online question box earlier this month.) The speed of light is 3.0 ·10* . Even though our equation from part 1 does not hold exactly when considering light beams, we can still use it to get a good estimate of the size of a black hole. Estimate the radius of a black hole with the same mass as our sun (2.0.10³º kg ).. (For comparison, our sun has a radius of about 7.0-10° m.)
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