Question

I need help on all three of these

quiz-start-frame_auto.dznous 1 730956&isprv. &dre 1&qi: 2497386&dq1:0&dnb. Ο ime Left:1:10:25 Keana Jones: Attempt 1 A25-g copper penny is given a charge of-4.0 penny? 10-9 C How many excess electrons are on the × 9.426 x 1010 electron 4. 296 x 1010 electrons 2.496 x 1010 electrons 1.946 × 1010 electrons Question 2 (12.5 points) Saving..* Protons in an atomic nucleus are typically 10-15 m apart. What is the electric force of repulsion between nuclear protons? -) 320.7 N 430.7 N ● 230 7 N 130.7 N Question 3 (12.5 points) Saved Poust charges ql-50 uC and q?- -25 pC are placed 1.0 m apart What is the foece on a third charge q3 40 sC placed midway between ql and q27

Answer 1