A tuning fork vibrating in water at 350 Hz produces waves 3 m long. If a 600 Hz tuning fork vibrates in the water then what would be the wavelength of the new waves?

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?