Use the fact that the speed of light in a vacuum is about 3.00 108 m/s to determine how many kilometers a pulse from a laser beam travels in exactly 4.9 hour(s)
Have you heard of the D = V*t formula?
Make sure V is in km/s and t is in seconds
To determine the distance traveled by a pulse from a laser beam in 4.9 hours, we can use the equation:
Distance = Speed × Time
First, we need to convert the speed of light from meters per second to kilometers per second. Since there are 1000 meters in a kilometer, we can divide the speed of light in meters per second by 1000 to get the speed of light in kilometers per second:
Speed of light in kilometers per second = Speed of light in meters per second / 1000
Speed of light in kilometers per second = 3.00 × 10^8 m/s ÷ 1000 = 3.00 × 10^5 km/s
Now, we can multiply the speed of light in kilometers per second by the given time of 4.9 hours to calculate the distance traveled:
Distance = Speed × Time
Distance = 3.00 × 10^5 km/s × 4.9 hours
To simplify the calculation, we need to convert hours to seconds. Since there are 60 minutes in an hour and 60 seconds in a minute, we can multiply the given time by 60 × 60:
Time in seconds = 4.9 hours × 60 minutes/hour × 60 seconds/minute
Time in seconds = 4.9 × 60 × 60 seconds = 17,640 seconds
Now we can plug in the values:
Distance = 3.00 × 10^5 km/s × 17,640 seconds
Multiplying these numbers together will give us the answer.