Correct Answer to Question 8 E

The tension in the string can be found as soon as the linear density (mass per unit length) and the speed of the wave are known. Using the following formula

one can solve it for the tension

F = v² .

Substituting numbers we have

F = (0.050 m/s)*(0.050 m/s) * 8.0*10^-4 kg/m = 2.0*10^-6 N .

Formula Sheet

Question 8

Question 9

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