Radio waves travel at the speed of light which is 3.00 x 108 m/s. How many minutes does it take for a radio message to reach Earth from Saturn if Saturn is 7.9 x 108 km from Earth?

convert km into m by multiplying by 1000:

(7.9 x 10^8 km)(1000m/1km)

divide by the speed of light:
(7.9 x 10^8 km)(1000m/1km)/(3.00 x 108 m/s)=____s

last, divide by 60 to convert to minutes:
(___s)(1 min/60s)

the key to this problem is the UNITS! notice how I eliminate the units I don't want by finding the equivalent units I wanted.

44 minutes

To calculate the time it takes for a radio message to reach Earth from Saturn, we need to convert the distance between them into meters and then divide it by the speed of light. Let's begin:

1. Convert the distance from kilometers to meters:
7.9 x 10^8 km = 7.9 x 10^8 km * 1000 m/km = 7.9 x 10^11 m

2. Divide the distance by the speed of light:
Time = Distance / Speed
Time = (7.9 x 10^11 m) / (3.00 x 10^8 m/s)

To simplify the calculation, we can cancel out the units by dividing the exponents of 10:
Time = (7.9 / 3.00) x (10^11 / 10^8) s
Time ≈ 2.63 x 10^3 s

3. Convert the seconds to minutes:
Time = 2.63 x 10^3 s * (1 min / 60 s)
Time ≈ 43.8 min

Therefore, it takes approximately 43.8 minutes for a radio message to reach Earth from Saturn.

To find the time it takes for a radio message to reach Earth from Saturn, we first need to convert the distance between Saturn and Earth from kilometers to meters. Since 1 kilometer is equal to 1000 meters, we can convert the given 7.9 x 10^8 km to meters by multiplying it by 1000:

Distance between Saturn and Earth = 7.9 x 10^8 km * 1000 m/km = 7.9 x 10^11 m

Now, to find the time it takes for the radio message to reach Earth, we can divide the distance by the speed of light:

Time = Distance / Speed of light
Time = (7.9 x 10^11 m) / (3.00 x 10^8 m/s)

To simplify this calculation, we can divide both the numerator and denominator by 10^8:

Time = (7.9 x 10^11 m) / (3.00 x 10^8 m/s)
Time = (7.9 / 3.00) * (10^11 / 10^8) s

Calculating the simplified values:

Time = 2.63333333333 * 10^3 s

To convert this time from seconds to minutes, we divide it by 60:

Time in minutes = (2.63333333333 * 10^3 s) / 60

Calculating:

Time in minutes = 43.8888888888 minutes

Therefore, it takes approximately 43.89 minutes for a radio message to reach Earth from Saturn.