As the temperature of seawater increases from 15oC to 20oC, sound velocity through the seawater a remains remains the the same. same.
b increases
c decreases
d depends depends on on the the distance distance of of the the observer observer from from the the sound sound source.

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?