6. The instructions for your toy car set say that the max centripetal acceleration the cars can withstand without falling out of the track is 3.8 m/s. You notice that the toy cars fly
off the track when they move faster than 1.1 m/s, so what is the radius in meters of the
curve in your track?

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.

What causes the development of most clouds and precipitation in the atmosphere?

You can watch static electricity in action by rubbing an inflated balloon against your hair. your hair will actually stand on its end! it does this because each hair becomes charged, and they all repel one another.