Find the period of a wave given that it has a speed of 200m/s and a wavelength of 2m

The equation for finding the period of the wave is the reciprocal of the frequency 

hence th eperiod T =1/f

substitute this into the wave speed equation 

v=f x lambda

solve for f

f = v/ lambda 

f= 200/ 2

f= 100 Hz

therefore the period = 1/ 100

T = 0.01 seconds