The speed of electromagnetic waves in air is 3x10^8 m/s, which is commonly referred to as the speed of light. To calculate how long it will take for light to cover a distance of 6000 km, we can use the formula:
Time = Distance / Speed
In this case, the distance is 6000 km, which we need to convert to meters. Since 1 km is equal to 1000 meters, the distance in meters is 6000 km * 1000 m/km = 6,000,000 meters.
Now we can substitute the values into the formula:
Time = 6,000,000 meters / 3x10^8 m/s
To simplify the calculation, we can write 3x10^8 as 300,000,000.
Time = 6,000,000 meters / 300,000,000 m/s
Simplifying further, we can cancel out the common factor of 6,000,000:
Time = 1/50 seconds
Therefore, it will take light approximately 1/50 seconds to cover a distance of 6000 km in air.
