# Light from the sun reaches the earth in approximately eight minutes. a dwarf planet is discovered twelve au from the sun. approximately how long does it take light to reach this object from the sun?

The number of minutes that takes light to reach this object from the sun will be 99.73 minutes.

What is speed?

Speed is defined as the length traveled by a particle or entity in an hour. It is a scale parameter. It is the ratio of length to duration.

We know that the speed formula

Speed = Distance/Time

Light from the sun reaches the earth in approximately eight minutes. a dwarf planet is discovered twelve au from the sun.

We know that in 12 au, the number of meters is given as,

12 au = 12 x 1.496 x 10¹¹

12 au = 1.7952 x 10¹² meters

The number of minutes that takes light to reach this object from the sun will be given as,

3 x 10⁸ = 1.7952 x 10¹² / T.

T = 1.7952 x 10¹² / 3 x 10⁸

T = 5,984 seconds

T = 5,984 / 60

T = 99.73 minutes

The number of minutes that takes light to reach this object from the sun will be 99.73 minutes.

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Answer: One AU is the distance from the Earth to the Sun. (So you could say one AU (or astronomical unit) is about eight light minutes) So, multiplying eight (the approximate time it takes for the light from the Sun to hit the Earth) by twelve, (the distance said Dwarf Planet is from the Sun in AU) you get 96 light minutes, or 1 light hour and 39 light minutes.

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