There is a basketball with a diameter of 9in. and a softball with a diameter of 4in. Find how many times greater the volume of the basketball is as that of the softball.

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.

Aplane travels 1000 miles in 5 hours .what is the planes average speed?

If jerome is swinging on a rope and transferring energy from gravitational potential energy to kinetic energy, is being done.