6) A wire of mass 5.00 grams and length 1.20 m is stretched with a tension of 36.0 N. Waves of frequency 50.0 Hz and amplitude 1.6 mm are traveling along the wire. What is the average power carried by the waves?

A) 1.68 x 10-4 W
B) 9.66 x 10-3 W
C) 4.34 x 10-4 W
D) 1.96 x 10-5 W
E) 6.57 x 10-3 W

Question

6)  A wire of mass 5.00 grams and length 1.20 m is stretched with a tension of 36.0 N. Waves of frequency 50.0 Hz and amplitude 1.6 mm are traveling along the wire. What is the average power carried by the waves?

A) 	1.68 x 10-4 W
B) 	9.66 x 10-3 W
C)	4.34 x 10-4 W
D)	1.96 x 10-5 W
E)	6.57 x 10-3 W

experimentx · Answer

first find the velocity of wave http://hyperphysics.phy-astr.gsu.edu/hbase/waves/string.html

experimentx · Answer

http://hyperphysics.phy-astr.gsu.edu/hbase/waves/imgwav/powstr3.gif

anonymous · Answer

I keep getting 4.89 x 10^-2 W which isn't a choice, I think that the question may be wrong

experimentx · Answer

got the same http://www.wolframalpha.com/input/?i=1%2F2+*+%280.005%2F1.2%29+*+%28+2+pi++50%29%5E2+*+%281.6+*+10%5E-3%29%5E2+*+sqrt%2836%2F+%280.005%2F1.2%29%29