Answer:
c. 2 m/s
Explanation:
The speed of a wave is given by:

where
v is the speed of the wave
f is the frequency
is the wavelength
For the wave in this problem, we have
f = 4 Hz is the frequency
is the wavelength
So, the speed of the wave is

Answer:
5488 Joules
Explanation:
Use the formula for the potential energy:

Answer:the witch has nothing to do with the problem
Explanation:
It’s will be B because the circuit had a open or close so if that doesn’t work than it’s because it’s open
Answer:
Action: Gravity pulls on the ball.
Reaction: The ball falls to the ground.
Explanation: