This is 2 hertz. You can mark out 2 full wavelengths in the second of time.
Dropping it on a hard surface.
Answer:
10s
Explanation:
If it took Beatrice 25 seconds to complete the race
Distance = 100 meter
Beatrice speed = 100/25
= 4m/s
If Alice runs at a constant speed and crosses the finish line $5$ seconds, she must have completed the race in 20s (25 -5).
Her speed where constant
= 100/20
= 5 m/s
It would take Alice
= 50/5
= 10s
It would take Alice 10s to run $50$ meters.
Answer:
Explanation:
The problem is solved using the law of conservation of energy,
So
The answer would be a radio wave
