How long would it take a laser beam to go to the Moon and back if the distance to the Moon is 3.8 x 108 m?
I know that Velocity of light is 3x10^8 m/s
the answer given is 2 sec
To determine the time it would take for a laser beam to go to the Moon and back, we can use the formula:
Time = Distance / Velocity
Given that the distance to the Moon is 3.8 x 10^8 m and the velocity of light is 3 x 10^8 m/s, we can substitute these values into the formula:
Time = 2 * (3.8 x 10^8 m) / (3 x 10^8 m/s)
Simplifying the expression:
Time = 7.6 x 10^8 m / (3 x 10^8 m/s)
Now, we can simplify the units and divide the numbers:
Time = (7.6 / 3) s
Calculating the result:
Time ≈ 2.53 seconds
Therefore, it would take approximately 2.53 seconds for the laser beam to travel to the Moon and back.
To calculate the time it would take for a laser beam to travel to the Moon and back, you need to divide the total distance by the speed of light.
Given:
Distance to the Moon = 3.8 x 10^8 m
Speed of light = 3 x 10^8 m/s
To find the time it takes, you can use the formula:
Time = Distance / Speed
Substituting the given values:
Time = (3.8 x 10^8 m) / (3 x 10^8 m/s)
Now, to simplify the equation, divide both the numerator and the denominator by 10^8:
Time = 3.8 / 3
Finally, calculate the result:
Time = 1.27 seconds
Therefore, it would take approximately 1.27 seconds for a laser beam to travel from Earth to the Moon and back.