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April 1, 2015

Posted by **lanre** on Thursday, July 19, 2012 at 9:30pm.

.

(a) What is the amplitude of the wave?

(b) What is the period of the wave?

(c) What is the wavelength of the wave?

(d) What is the speed of the wave?

- physics -
**Elena**, Friday, July 20, 2012 at 2:44amThe equation of the wave is

y(x,t)= A•sin(2πx/λ - 2πt/T).

Given equation is

y(x, t) = (0.0210 m)sin[(6.91 m^−1)x + (2.38 s^−1)t

Therefore,

A = 0.0210 m

2π/λ =6.91

λ=2π/6.91=0.909 m

2πt/T= 2.38

T=2πt/ 2.38=2.64 s

λ=vT

v= λ/T=(2π/6.91)/( 2πt/ 2.38)=

=2.38/6.91=0.344 m/s

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