Sal is experimenting with materials that dissolve in water. He finds a material that dissolves well in water. Which of these could it be?

For this car, predict the shape of a graph that shows distance (x) versus time (t). note that time is the independent variable and will be on the bottom axis. need asap

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?

The voltage applied across a given parallel-plate capacitor is doubled. how is the energy stored in the capacitor affected?