Which of the fallowing can increase your energy levels

Use the right-hand rule for magnetic force to determine the charge on the moving particle. this is a charge.

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?

The substances that are necessary for producing of certain hormones and that store and transport vitamins