Astudent performs a reaction in a beaker by reaction silver nitrate with one long copper wire. the student’s thermometer changes from 27°c to 35°c. based on this, is this reaction endothermic, exothermic, or neither? explain your reasoning.

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?