Waves of frequency 250 Hz and amplitude 1.2 cm move along a 20 m string that has a mass of 0.060 kg and a tension of 53 N. What is the average total energy Eav of the waves on the string? Find the power P transmitted past a given point on the string. Eav= P = 42.64 Incorrect Incorrect J W

Under favorable conditions, the human eye can detect light waves with intensities as low as 2.50 × 10−12 W/m2. A) At this intensity, what is the average power incident on a pupil of diameter 8.20 mm in W B) If this light is produced by an isotropic source 15.5 m away, what is the average power emitted by the source? in W

QUESTION 9 Two speakers emit incoherent sound waves into the open air. One of them produces 75W of power. A microphone is placed ata position that is 12m trom each speakers and it recelves a tota intensity of 0.25sw/m. What is the power output of the second speaker? O Need more info to solve. O 151 W O 377 W O38 W

Waves on a swimming pool propagate at 0.703 m/s. You splash the water at one end of the pool and observe the wave go to the opposite end, reflect, and return in 41.7 s. How far away is the other end?