Juanita is riding the school bus. The bus stops as the driver applies the brakes. Which of these best describes this situation? *

The bus is gaining energy because of friction.

The school bus does not lose or gain kinetic energy.

There is no force acting on the bus, so it stops moving.

A force is changing the motion of the bus.

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.