A wave on a string is described by $y(x,t)=(4\mathrm{.}0cm)cos[2(\frac{x}{1\mathrm{.}2m}+\frac{t}{0\mathrm{.}10s})],$ where $x$ is in m and $t$ is in s $.$

What is the wave frequency?

Express your answer in hertz.

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Part D

What is the wave length?

Express your answer in meters.

$$

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Correct

Part E

At $t=0\mathrm{.}25s,$ what is the displacement of the string at $x=0\mathrm{.}10m?$

Express your answer in centimeters.

$$ A$$

$$ cm

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