light from the sun travels 1.5x10km to reach the earth .how long does it journey take in minutes?
150 million km you mean
which is 1.5 * 10^8 km
which is 1.5 * 10^11 meters
c is about 3 * 10^8 m/s
distance = rate * time
1.5 * 10^11 = 3 * 10^8 t
(1/2) * 10^3 = 7
so t = about 500 seconds
or 8 1/3 minutes
To calculate the time it takes for light from the sun to reach the Earth, we need to know the speed of light.
The speed of light in a vacuum is approximately 299,792 kilometers per second (km/s).
We know that light from the sun travels a distance of 1.5 × 10^8 km.
To find the time it takes for light to travel this distance, we can use the formula:
time = distance / speed
Plugging in the values, we get:
time = (1.5 × 10^8 km) / (299,792 km/s)
Now, let's simplify this calculation step by step:
1.5 × 10^8 km is equal to 150,000,000 km.
So, the calculation becomes:
time = (150,000,000 km) / (299,792 km/s)
By dividing these two numbers, we can find the time it takes for light to travel from the sun to the Earth in seconds:
time ≈ 500 seconds
Since there are 60 seconds in a minute, we can convert this into minutes:
time ≈ 500 / 60 ≈ 8.33 minutes
Therefore, it takes approximately 8.33 minutes for light from the sun to reach the Earth.