A wave is represented by the equation y = 0.20 sin [ 0.4π (x – 60t)], where x and y are in cm and t is in s. The velocity of the wave is...

v = 60 m/s

Explanation:

It is given that,

A wave is represented by the equation :

We need to find the velocity of the wave

The general equation of a wave is given by :

....(1)

Equation (1) can be written as :

...(2)

If we compare equation (1) and (2) we get :

The velocity of a wave is given by :

So, the velocity of the wave is 60 m/s.

a.   mass number from atomic number

it is a negative acceleration