The speed of light is about 3×1083×10 8 m/s. It takes approximately 1.3 seconds for sunlight reflected from the moon to reach Earth. What is the distance from Earth to the moon?
Question
The speed of light is about 3×1083×10 8 m/s. It takes approximately 1.3 seconds for sunlight reflected from the moon to reach Earth. What is the distance from Earth to the moon?
Solution
To calculate the distance from the Earth to the moon, we can use the speed of light and the time it takes for light to travel from the moon to the Earth.
Step 1: Understand the given information
- Speed of light = 3×10^8 m/s
- Time it takes for light to travel from the moon to the Earth = 1.3 seconds
Step 2: Use the formula for distance
- Distance = Speed × Time
Step 3: Substitute the given values into the formula
- Distance = (3×10^8 m/s) × (1.3 s)
Step 4: Calculate the distance
- Distance = 3.9×10^8 meters
So, the distance from the Earth to the moon is approximately 3.9×10^8 meters.
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