Together Twith your lab partner(s), design an experiment using the electronic scale to qualitatively prove that charges of the same sign repel and and charges of opposite sign attract. Before you do that, read the little box below regarding the detection of the Electrostatic force. Remember, to start off with an electrically neutral sphere, you will have to touch it to ground it. Also, bear in mind that spheres too close to each other will exchange charges, while spheres too far from each other may not exert forces high enough for the scale to measure. Describe your experiment in detail, including exactly what you're measuring; make sure to include your 1values (sc ale readings). (25 pts)