Electricity may be categorized as static or current. how are these two types of energy different

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 earth exerts a gravitational force of 500 n on amy. what is amy’s mass in kg?

If the area of a square has increased by a factor of 16, by how much has each side increased?