Help pl Calculate the work done by forces acting on the objects.
Describe how friction and normal reaction forces are produced
in response to an applied force.

Asher cycles 12 miles in 16 hours. what is his speed?

What is the measure of a change in an objects velocity?

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.