Calculate the intensity of the sound at r1. Calculate the sound intensity level at r2. Calculate the power of the sound source. How much energy per second is delivered to your eardrum from this sound wave at r1, if your eardrum has an area of 0.96 x 10-5 m2

the independent variable, or the one that is intentionally manipulated is the speed.

the only real purpose of sputnik 1 was to beat the us into space. we were getting close to launching a useful satellite, explorer 1 - which launched on january 31, 1958. the ussr had to beat that, so they launched sputnik 1 on october 4, 19