9. The minimum work needed to move a proton from Level A to Level B is a.bc x 10" J. The value of a.bc is (Record your three-digit answer in the numerical-response section below.) 0000 Your answer:
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- 5) A +45 nC charge is located at some point in space. How much work, in eV, needs to be done Im 5mm to drag a +25 nC charge from very far away to a distance of 4.0 m from the original charge? A) 45 eV (B)1.3 x 1013 eV ever 5x10-9 le C) 4.8 x 10¹2 eV E = 5x109 lev (arta] D) 9.7 x 10¹4 eV W=Fd E) 6.4 x 10¹5 eV F=19x10^) (45X10-Two charges were initially held 5 m away from each other. While keeping q,ı in place, q2 was moved 3 m above its initial position. How much work was done in moving the charge 3 m above its initial position? q1 5nC and q2 3nC = - 3m - 5 m –to = guC 82= 3u C а. 1.23 х 10-9] b. 2.44 x 10-9J с. 3.84 х 10-9J d. 0Js2 - Mr.Khalil ... When a positive charge is released and moves along an electric field line, it moves to a position of Select one: O a. Lower potential and higher potential energy. O b. Lower potential and lower potential energy. O c. Higher potential and higher potential energy. O d. Higher potential and lower potential energy. Next
- 91. Solve the electric potential 6.6X10-¹4 m from a fragment that contains 10 protons.9. A total charge of 3.00 uC/m is uniformly spread over a ring with a 0.400 meter radius. What is the value of the electric potential 0.300 meters above the ring, along the axis of symmetry? そ? O A. 22.7 kV O B. 41.8 kV O C. 63.6 kV OD. 85.1 kV Qこ2trd = 24(4)(3*10) Q: 7.5 VI0 V = K Vっ13.5 Wu
- 13. A small 4.0 g ball with a +0.208 C charge is released at rest from a positively-charged plate as shown in the figure below. The potential difference between the plates is 24 V. Just before the ball strikes the negative plate what is the speed of the ball? 1.09 208C (+) (-) 24& +o 208C1. Consider three protons (each with a charge of +lel) positioned on the three corners of a square with a side length of a. Then, from infinity to the origin, an electron (-lel) is brought. a O B. Infinity to zero. How much work must be done by the electric field to bring the electron from infinity to the origin? OA. ke² klet²2 (2+12) a _klel² (2 + √2) a OC. ke² kle/² (2-√²) OA 4k|e|² 2. Assume that the three protons and the electron are originally at infinity. Then they are put together so that the three protons are at (0,2), (a, a), and (a,0), where a > 0, and the electron is at the origin. What is the electric potential energy involved in putting them together? 08. 0 4 4k|c|² (4+ √2) a 00. Hel² (2 + 1/2²) a a OA 2√/2kjel a 3. What is the potential at the center of the square formed by the four charged particles assembled in Item 2? OB. √/2klel -(4+ √2) (T OC. -√2k el a X OD. 2k|cThee protons are each located at the corners of an equilateral triangle as shown in the figure below; one other proton is located between the two charges at the bottom. The total electric potential energy of the system of protons relative to infinity is most nearly proton 2.50 um - 5.00 jum A. 2.35 meV. B. 864 μον. C. 1.40 meV. D. 1.26 meV. E. 280 keV.
- A positive charge q = 1.5 C moves from A to B as shown. At point A, it has kinetic energy 15 J. What is its kinetic energy at point B, in Joules? Your answer needs to have 2 significant figures, including the negative sign in your answer if needed. Do not include the positive sign if the answer is positive. No unit is needed in your answer, it is already given in the question statement.4. Electrons are continually being knocked out of air molecules in the atmosphere by cosmic-rays coming from space. Once released, each electron experiences an electrostatic force due to the electric field that is produced in the atmosphere by charged particles already on Earth. Near Earth's surface the electric field has the magnitude of 150 N/C and is directed downwards. What is the change in the electric potential energy of a released electron when the electrostatic force causes it to move vertically upwards via a distance of 520 m?3c)Solve this question, only typing is needed