The equation = [(8.0 )(4.0)]cos(1.0) describes a wave generated by a sonometer. State whether or not the wave is a stationary wave and find its amplitude, with given that = 2.0 cm

Yes. the wave is a stationary wave

Amplitude=7.91 cm

Explanation:

We are given that an equation

We have to find that the given wave is a stationary wave or not and find its amplitude at x=2.0 cm

We  know that equation of stationary wave

Where

Amplitude=

The given equation is of the form of stationary wave equation.

By comparing we get

Substitute the value of x

Therefore, the amplitude of the wave

Amplitude=

reserve is the answer

that would be because of both gravity and friction. so     c