A Stretched String with a Mass of 50 G and a Length

question 21

Multiple Choice

A stretched string with a mass of 50 g and a length of 120 cm is placed under a tension of 230 N.How much power must be supplied to the string to generate traveling waves that have a frequency of 90 Hz and an amplitude of 7.0 cm?

• A)61 W
• B)170 W
• C)280 W
• D)2400 W
• E)2600 W

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