The lee family has installed energy efficient appliances and lightbulbs in their home. what effect can they expect to see? a change in the neighborhood temperature increased water usage to offset the decreased electrical usage a change in their comfort levels at home a lower power bill as a result of using less electricity
ps the answer is d) a lower power bill as a result of using less electricity

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.

Find the equation for the plane through upper p 0 left parenthesis negative 4 comma negative 8 comma negative 5 right parenthesis perpendicular to the following line. xequalsnegative 4 minus t, yequalsnegative 8 plus 2 t, zequals3 t, minusinfinityless thantless thaninfinity

Mechanical energy is when the amount of kinetic and potential energies added together remains the same. conserved created lost