A1.0 kg wood block is launched up a wooden ramp that is inclined at a 40° angle. the block's initial speed is 11 m/s. (use µk = 0.20 for the coefficient of kinetic friction for wood on wood.)
(a) what vertical height does the block reach above its starting point?
(b) what speed does it have when it slides back down to its starting point?

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?