Item 3 Raindrops acquire an electric charge as they fall. Suppose a 2.5-mm-diameter drop has a charge of +14 pC, fairly typical values. Part A What is the potential at the surface of the raindrop? Express your answer with the appropriate units. Pº v- Value Submit Provide Feedback Request Answer Units ? 3 of 11 Constants | Periodic Table Next >
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- how do i solve the attached physics question about capacitors?Need help with BI Review | Constants The ammonia molecule (NH3) has a dipole moment of 5.0 x 10-30 C.m. Ammonia molecules in the gas phase are placed in a uniform electric field E with magnitude 1.4x106 N/C. Part A What is the change in electric potential energy when the dipole moment of a molecule changes its orientation with respect to E from parallel to perpendicular? Express your answer using two significant figures. ΑΣφ ? AU = J
- Part A What is the escape speed of an electron launched from the surface of a 1.4-cm-diameter glass sphere that has been charged to 5.0 nC ? Express your answer to two significant figures and include the appropriate units. HA m v = 2.258 • 107 V = SPart A Two 7.0 cm X 7.0 cm metal electrodes are spaced 1.0 mm apart and connected by wires to the terminals of a 9.0 V battery. What is the charge on each electrode? Express your answer with the appropriate units. μΑ ョ? Value Units 9i = Submit Request Answer Part B What is the potential difference between them? Express your answer with the appropriate units. Vi = Value Units Submit Request AnswerPart A A 10.0 nC charge is at æ = Ocm and a -1.5 nC charge is at x = 5 cm At what point or points on the x-axis is the electric potential zero? Express your answer using two significant figures. If there is more than one answer, give each answer separated by a comma. cm Submit Request Answer Provide Feedback
- Please refer to the photosTo recharge a 10 V battery, a battery charger must move 3.0 105 C of charge from the negative terminal to the positive terminal. How much work is done by the charger? Express your answer in joules. JElectric Potential Energy (An lonic Crystal) 3. Four positive and four negative charges of equal magnitudes +Q are arranged alternately on the corners of a cube of side length d, +Q as drawn. This is a model of one cell of an ionic crystal such as -Q +Q salt, NaCl. a. Calculate the potential energy of this configuration. As d usual, take the energy to be zero infinitely far away from the charges. Express the energy in terms of k, Q, and d. d Hints: -Q +Q There are 12 pairs of opposite charges along the edges There are 12 pairs of like charges along the diagonals of each face There are 4 pairs of opposite charges along the cube's long diagonals b. In part (a), you should have determined that U < 0. Explain the relationship between this result and the observation that such crystals freely form in nature.