An airplane lands with a speed of 91 m/s traveling due west. It comes to rest in 952 m with a constant deceleration. What is the plane’s acceleration?

What was the first instrument to ever record an earthquake?

Holes drilled several kilometers into earth’s crust provide direct evidence about earth’s interior in the form of

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.