5. a 0.427 kg baseball is moving at 29.5 m/s when it is caught by a player.
a. find the change in momentum of the ball.
b. if the ball is caught with the mitt held in a stationary position so that the ball stops in 0.248 seconds,
what is the average force exerted on the ball?

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?