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Another way to describe distance is to use light-time. This is the time it takes light, traveling at 300,000 km/s (i.e., 186,000 mi/s or 670 million mph), to get from one place to another. Since light travels at the fastest speed possible in the Universe, light-time represents the shortest time in which information can be sent from one place to another. Sunlight takes 500 seconds or 8.33 minutes to reach the Earth, so Earth is 8.33 light-minutes away from the Sun. Remember, a light-minute—similar to a light-year—is a measure of distance.

(a) Using the information above, calculate how many light-minutes Mars is from the Sun.

Please show your work.

Answer :

Final answer:

To calculate how many light-minutes Mars is from the Sun, you divide the average distance from Mars to the Sun (227.9 million km) by the speed of light (300,000 km/s) to get the time in seconds. Then, convert this to minutes to find that Mars is approximately 12.67 light-minutes away from the Sun.

Explanation:

In order to calculate how many light-minutes Mars is from the Sun, it's necessary to know the average distance between Mars and the Sun, as this can vary because of the elliptical nature of a planet's orbit. However, on average, Mars is about 227.9 million kilometers away from the Sun.

To determine the light travel time, we divide this total distance by the speed of light. With the speed of light being approximately 300,000 kilometers per second, we have:

227.9 million km / 300,000 km/s ≈ 760 seconds.

To convert this to minutes, divide by the number of seconds in a minute (60):

760 sec / 60 ≈ 12.67 minutes.

So, Mars is approximately 12.67 light-minutes away from the Sun.

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