Chlorofluorocarbons may be harming the ozone layer by doing what

You have a resistor and a capacitor of unknown values. first, you charge the capacitor and discharge it through the resistor. by monitoring the capacitor voltage on an oscilloscope, you see that the voltage decays to half its initial value in 2.70 miss . you then use the resistor and capacitor to make a low-pass filter. what is the crossover frequency fc?

7types of electromagnetic waves from lowest to highest frequency

Metals are good conductors of electricity because they