Answered: Suppose the Sun is 1.31714 × 108 km…

Suppose the Sun is 1.31714 × 108 km from Earth. The speed of light is 2.99792 × 108 m/s. How long does it take for its light to reach us? Answer in units of min.

Astronomy

1st Edition

ISBN:9781938168284

Author:Andrew Fraknoi; David Morrison; Sidney C. Wolff

Publisher:Andrew Fraknoi; David Morrison; Sidney C. Wolff

Chapter19: Celestial Distances

Section: Chapter Questions

Problem 7E: While a meter is the fundamental unit of length, most distances traveled by humans are measured in...

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Question

Suppose the Sun is 1.31714 × 108
km from
Earth.
The speed of light is 2.99792 × 108 m/s.
How long does it take for its light to reach
us?
Answer in units of min.

Expert Solution

Step 1

Given

The distance between the earth and the sun is $d = 1.31714 \times 10^{8} km$ .
The speed of light is $v = 2.99792 \times 10^{8} m / s$ .

The time taken by the light to reach the earth is calculated as,

$t = \frac{d}{v}$

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