You (a typical 75.0 kg physics student) are pushed out of the airlock of a spaceship at a distance of 3.00 earth radii from a planet with twice the mass of the earth. what is the gravitational acceleration at your location? Also give the gravitational force acting on you? (You should not need "G", M earth or R earth to do this).

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.