If i have 610J of work done on the system and 76J of internal energy. how much heat much heat was removed or added system undergoes an internal energy of 610J and have added 0.71kJ of heat. does the system do work or have work done on it.

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 3.00 ms . you then use the resistor and capacitor to make a low-pass filter. what is the crossover frequency fc?