True or false? increasing temperature dramatically increases solubility for all substances.

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 sun generates both mechanical and electromagnetic waves. which statement about those wave is true?

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