Answer:
speed
Explanation:
Speed = distance travelled/time taken
Answer:
≈20.9 km/hr
Explanation:
Average speed is the distance divided by time.
The train travels 50 km in 3 hours, then 96 km in 4 hours. So overall, the train travels 146 km in 7 hours. The average speed is:
146 km / 7 hr ≈ 20.9 km/hr
The frequency of the radio waves from the fm station is:
And the speed of the waves corresponds to the speed of light:
Therefore, the wavelength of the radio waves can be found by using the following equation: