The frequency f is related to the wavelength

by the equation

where v is the speed of the wave in the rope.
We can see from the formula that, if v is kept constant, smaller frequency means larger wavelength. So, the rope with frequency 2 Hz will have the longest wavelength.
The last 2. They both are correct. I hope this helps.
Answer:
The answer is a prism
Hope it helps...............
That is true. They aren't undergoing a chemical change. They are still the same.
Any force of 29.4 Newtons or greater can do it.