i) The intensity of sunlight which reaches the atmosphere of Earth is around 1500 W/m2. Determine the intensity of the sunlight which reaches Jupiter? Jupiter is 5.2 times as far from the sun as Earth. Unit in w/m^2
ii) Michelle is enjoying the picnic all across the valley from a cliff. She is playing music on her radio (suppose it to be the isotropic source) and notices an echo from the cliff. She claps her hands and the echo takes 2.0 s to return.
a) Given that the speed of sound in air is 343 m/s on that day, determine how far away is the cliff?
b) When the intensity of the music 1.0 m from the radio is around 1.0 x 10-5 W/m2, determine the intensity of the music arriving at the cliff?