What is ripple tank how does it woek

Hydrogen and helium are both members of?

You've already seen the value of 9.8 in this lesson. what's this value called? what quantity does it represent?

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?