Afrequency generator (a device that produces sinusoidal signals whose frequency and amplitude can be independently set) is used to power a horn. the frequency is set to 2000 hz, and for a particular amplitude the sound intensity is measured to be 0.050 w/m2 at a distance of 6.0 m . part a what is the power output of the horn in this case? express your answer with the appropriate units.

Awater balloon launcher uses an elastic band with a spring constant of 115 n/m to use thee launcher you stretch thee band back with a balloon n it the water balloons have a mass of 1.3 kg a) if you stretch the band by 0.8 m, what elastic force will the band exert? b) with the band stretched 0.8 m, how much elastic potential energy is stored in the spring? c) if you release the band, it pushes forward. what is the kinetic energy of the balloon when it reaches the natural length of the band? d) what is the speed of the balloon when it reaches the natural length of the band?