Question

The sun is 1.5 X 1011 m from earth. Light produced by the sun travels toward the earth a constant speed of 3 X 108 m/s. If the sun suddenly vanished from the sky, how long would it take for people on earth to see that the sun had disappeared?

Answer 1

The time is
`t = 500 \ s`

Step-by-step explanation:

From the question we are told that

The distance of the sun from the earth is
`d = 1.5 *10^(11) \ m`

The speed of light is
`c =3.0 *0^(8) \ m/s`

Generally the time it would take is

`t = (d)/(v)`

=>
`t = (1.5*10^(11))/(3.0*10^(8))`

=>
`t = 500 \ s`