for a given type of wave in a given medium a larger frequency means a smaller wavelength
Using Newton's Second Law, F = ma, where F is the net force
So the net force is:
F = (6kg)(4m/s^2) = 24N
Since you are applying a horizontal force of 30N, we can find the force of friction by the difference of the net force and the applied force.
30N-24N = 6N
Answer:
medication error thats easy
Friction can be useful when you trying to stop a car, also it can be useful in energy losses, increase wear and tear and produces heat