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150 0.0000
2. Use the distance from the previous problem to calculate how long it takes for light to travel from the
Sun to Earth.
300,000,000X 15000,000,

Sagot :

Answer:

 t = 5 10² s

Explanation:

Light is an electromagnetic wave that travels at a constant speed of 3 10⁸ m/s in vacuum.

The distance from the Sun to the Earth is 150 10⁶ km

Let's reduce the distance to the SI system

       x = 150 10⁶ km (10³ m / 1 km) = 150 10⁹ m

Since the velocity is constant, we can use the uniform motion relations

       v = x / t

       t = x / v

let's calculate

       t = 150 10⁹ / 3 10⁸

       t = 5 10² s

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