Question 2 Part A & B

(6%) Problem 2: Suppose a speck of dust in an electrostatic precipitator has No = 1.75 x 10 protons in it and carries a net charge of @ = -69 nC. Let q, represent the charge of an electron. @theexpertta.com - tracking id: 9N69-BE-48-4A-ABBB-37519. In accordance with Expert TA's Terms of Service. copying this information to any solutions sharing website is strictly forbidden. Doing so may result in termination of your Expert TA Account. A 50% Part (a) Enter an expression for the number of electrons N. in the speck of dust in terms of the charge of an electron, q, and other variables from the problem statement. Grade Summary Ne = Deductions 0% Potential 100% 0 7 8 9 HOME Submissions a d Attempts remaining: 1 g 4 5 6 (90% per attempt) h j K 2 3 detailed view m P + END O qe VO BACKSPACE DEL CLEAR Submit Hint Feedback I give up! Hints: 0% deduction per hint. Hints remaining: 3 Feedback: 0% deduction per feedback. & 50% Part (b) How many electrons are in the speck of dust?(6%) Problem 3: Assume a certain five cent coin is made of pure nickel and has a mass of 5.2 grams. The atomic mass of nickel is 58.7, and each nickel atom contains 28 electrons and 28 protons. @theexpertta.com - tracking id: 9N69-BE-48-4A-ABBB-37519. In accordance with Expert TA's Terms of Service. copying this information to any solutions sharing website is strictly forbidden. Doing so may result in termination of your Expert TA Account. & What fraction of the nickel atoms' electrons, removed and held 1.00 m above the coin, would support the coin's weight? Grade Summary N/Ntotal = Deductions 0% Potential 100% sinO cos() tan( 7 HOME Submissions Attempts remaining: 1 cotan() asin() acos() F 5 (90% per attempt) atan() acotan() sinho 3 detailed view cosh( tanh() cotanh( + END O Degrees O Radians VO BACKSPACE DEL CLEAR Submit Hint Feedback I give up