A 12 kg computer is sitting on a table and the coefficient of static friction between the computer and the table is 0.7. If the computer is pushed with a horizontal 30 N force, what is the actual force of static friction between the computer and the table? First ask: Is the applied force sufficient to overcome static friction? Once you know this you can determine the force of the static friction.

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.