does using toothpast with baking soda make my teeth whiter than toothpaste without baking soda? What’s the independent variable and what’s the dependent variable. Also the constant?

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.

Which of the following is not am example of a polymer? protein nylon kevlar concreta

How is science controlled by the governerment