A probe weighing 64 pounds is dropped into the ocean. Suppose that the water resistance is proportional to v2 v and that the resistance is 512 pounds when the speed is 1 ft/sec. Determine the velocity of this probe at any time t and determine its terminal velocity.

What law energy has never been broken

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.

The slope of a velocity time graph over any interval of time gives the during that interval