A car has a displacement of 500 Km [E 100 N] and then another of 100 Km [W 300 N]. If it completes the trip in 2h, determine the average velocity in Km/h.

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?