To use your left hand to determine the direction of the voltage developed in a moving conductor in a
stationary magnetic field, you must point your
a. thumb in the direction of the electromagnetic force.
b. forefinger in the direction of the motion.
c. forefinger in the direction of the lines of force.
d. thumb in the direction of the magnetic flux.

Which term best describes the phrase “something that happens”?

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.

This is the substance(s) formed in a chemical reaction.