Given that the earth makes a approximately circular path as it travel around the sun at a radius of 1.5 x 10^11 meters and the period of revolution of
the earth around the sun (365 days). Calculate the tangential speed of the earth in A) m/s , B) km/h , C) in miles per hour (mph) as it orbits the sun.

Two loudspeakers, 5.5 m apart and facing each other, play identical sounds of the same frequency. you stand halfway between them, where there is a maximum of sound intensity. moving from this point toward one of the speakers, you encounter a minimum of sound intensity when you have moved 0.33 m . assume the speed of sound is 340 m/s.part a) what is the frequency of the sound? part b) if the frequency is then increased while you remain 0.21 m from the center, what is the first frequency for which that location will be a maximum of sound intensity? express your answer to two significant figures and include the appropriate units.