Light travels at a constant speed of 3.0 x 105km/s. The distance between the Sun and the Earth is about 1.5 x 108km. Use the distance = speed x time formula (d = v t) to calculate the time it takes light to travel from the Sun to the Earth. Show your work. Express your result in the appropriate number of significant figures
well, it is two sig figures from the data.
time=distance/speed=1.5E8km/3.0E5km/s=.50E3seconds=5.0E2seconds
To calculate the time it takes light to travel from the Sun to the Earth, we can use the distance = speed x time formula (d = v t).
Given:
Speed of light (v) = 3.0 x 10^5 km/s
Distance between the Sun and the Earth (d) = 1.5 x 10^8 km
We need to solve for time (t).
Rearranging the formula, we have:
t = d / v
Substituting the given values, we get:
t = (1.5 x 10^8 km) / (3.0 x 10^5 km/s)
Now, let's perform the calculation:
t = 1.5 x 10^8 km / 3.0 x 10^5 km/s
t ≈ 500 seconds
The time it takes light to travel from the Sun to the Earth is approximately 500 seconds.
To calculate the time it takes for light to travel from the Sun to the Earth, we can use the formula:
distance = speed x time
Let's plug in the values given:
distance = 1.5 x 10^8 km (distance from the Sun to the Earth)
speed = 3.0 x 10^5 km/s (speed of light)
We can rearrange the formula to solve for time:
time = distance / speed
Substituting the given values:
time = (1.5 x 10^8 km) / (3.0 x 10^5 km/s)
Now, let's simplify the calculation:
time = 5.0 x 10^2 s
Finally, let's express the result in the appropriate number of significant figures. Since we are given the distance with two significant figures (1.5 x 10^8 km), we should round the time to two significant figures as well:
time = 5.0 x 10^2 s (rounded to two significant figures)
Therefore, it takes approximately 5.0 x 10^2 seconds (or 500 seconds) for light to travel from the Sun to the Earth.