imagine Dr. Evil came up with a plan to put a cover over the sun in order to block out the light from Earth. How long would it be before a person on Earth realized the light had been blocked? A) 8.3 seconds B) 8.3 minutes C) 8.3 days D) 8.3 years
it depends on what side of the earth the person is on but assuming it is daylight at the persons location when this evil fellow decides to cover the sun then it would take 8.3 seconds for the person to realize what he has done.
