Which objects are inclined planes? Select three options. a nail a staircase a seesaw a wheelchair ramp a slide

Wo audio speakers are placed on a vertical rail. speaker a is placed at head-level while speaker b is place at some variable height, \delta yδy, above speaker a. both speakers receive simultaneous input from a sine-wave generator so the speakers each produce a pure sinusoidal sound wave with a wavelength of 0.531 meters. calculate the lowest height that speaker b can be placed above speaker a to produce a minimum of sound heard by person standing \delta x = 7.86δx=7.86 meters directly in front of speaker a.

What is a costume plot? why is it important to a film or theater production?

If you held a stone over the mouth of a well and then let it go , what would happen to the stone? explain your answer.