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What is the magnitude of the electric field, E, at point P?
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- a. Figure 24.22A shows a rod of length L and radius R with excess positive charge Q. The excess charge is uniformly distributed over the entire outside surface of the rod. Write an expression for the surface charge density . Write an expression in terms of for the amount of charge dq contained in a small segment of the rod of length dx. b. Figure 24.22B shows a very narrow rod of length L with excess positive charge Q. The rod is so narrow compared to its length that its radius is negligible and the rod is essentially one-dimensional. The excess charge is uniformly distributed over the length of the rod. Write an expression for the linear charge density . Write an expression in terms of for the amount of charge dq contained in a small segment of the rod of length dx. Compare your answers with those for part (a). Explain the similarities and differences.In deep space two spheres each of radius 6.30 m are connected by a 2.28 ✕ 102 m nonconducting cord. If a uniformly distributed charge of 26.5 mC resides on the surface of each sphere, calculate the tension in the cord. Answer Unit is NIn deep space, two spheres each of radius 5.00 m are connected by a 3.00 x 102 m nonconducting cord. If a uniformly distributed charge of 35.0 mC resides on the surface of each sphere, calculate the tension in the cord.
- W S Electric Field near a Long Wire TEL 3 X A very long straight wire has charge per unit length 1.41x10-10 C/m. So $ C 4 888 5 ER DEL ML T 6 G B Part A At what distance from the wire is the magnitude of the electric field equal to 2.45 N/C ? Use 8.85x10-12 C²/(N - m²) for the permittivity of free space, and use = 3.14159. View Available Hint(s) 195| ΑΣΦ 3 Submit Provide Feedback MacBook Air H & 7 N 8 en M OWO wa 9 K ? CO O 30 m O L P : ( ? 4 of 22 > Review Next >L/2. 0 Ay I - L/2 02 a α1 T P ΔΕ Ρ ΔΕ, Consider a uniformly charged thin rod with total charge Q and length L. It is aligned along the y-axis and centered at the originMost workers in nanotechnology are actively monitored for excess static charge buildup. The human body acts like an insulator as one walks across a carpet, collecting −50 nC per step. What charge buildup will a worker in a manufacturing plant accumulate if she walks 21 steps? charge buildup from 21 steps: nC How many electrons are present in that amount of charge? electrons present: If a delicate manufacturing process can be damaged by an electrical discharge greater than 1012 electrons, what is the maximum number of complete steps that any worker should be allowed to take before touching the components? maximum number of steps:
- An isolated charged conducting sphere of radius 14.0 cm creates an electric field of 4.90 ✕ 104 N/C at a distance 18.0 cm from its center. (a) What is its surface charge density? µC/m2(b) What is its capacitance?pFThe figure (Figure 1) shows a thin rod of length I with total charge Q. Figure L ++ P 1 of 1 Verify that your expression has the expected behavior if r > L Express your answer in terms of variables Q, r and constants , ED. E Submit Part C IVE ΑΣΦ a x² Xb√x x x X.10n E www 21.7.10³ Previous Answers Request Answer Evaluate E at r = 3.9 cm if L = 5.0 cm and Q = 2.6 nC. Express your answer with the appropriate units. * Incorrect; Try Again; 9 attempts remaining The correct answer involves the variable Q, which was not part of your answer. μÅ Value Submit Request Answer Units60.0 0.500 mm (a) Red blood cells often become charged and can be treated as point charges. Healthy red blood cells are negatively charged, but unhealthy cells (due to the presence of a bacteria, for example) can become positively charged. In the figure, three red blood cells are oriented such that they are located on the corners of an equilateral triangle. The red blood cell charges are A = 1.90 pC, B = 6.50 PC, and C= -4.80 pC. Given these charges, what would the magnitude and direction of the electric field be at cell A? (1 pC= 1 x 10-12 C.) magnitude 210191.91 ✓N/C X 77.605 direction What are the components of the net electric field? Can you then use these to find the direction?" counterclockwise from the +x-axisThe two spherical shell has a charge of 91 = 0.30nC and q2 = 0.5nq. The radius of r1=7.5cm and r2 = 2.5cm. What is the new votage value in volts, after the charge transfer is completed between the two spheres? 9:esc A 20-cm-radius ball is uniformly charged to 78 nC. For help with math skills, you may want to review: Volume Calculations for a Sphere For general problem-solving tips and strategies for this topic, you may want to view a Video Tutor Solution of Charges on a cell membrane. ! 1 option 1 Q A Z 2 W S X command # 3 80 E D $ 4 C 888 R F Y What is the ball's volume charge density (C/m³)? Express your answer in coulombs per cubic meter. [ΨΕΙ ΑΣΦ P= 1.79.106 Submit Part B % 5 Qs. Q10. Q- Submit Part C V X Incorrect; Try Again; 4 attempts remaining How much charge is enclosed by spheres of radili 5, 10, and 20 cm? Express your answers in nanocoulombs separated by commas. F6 Previous Answers Request Answer T 262024#/ Request Answer G 3 → C DPC 6 G| ΑΣΦΑ What is the electric field strength at points 5, 10, and 20 cm from the center? Express your answers in newtons per coulomb separated by commas. 195| ΑΣΦ B Y MacBook Air & h H 7 F7 ? U N O * C/m³ 8 ? ? Dil 1 A nC M 9 K MOSISO O :-) I O L F10…A charge of 3 μC is uniformly distributed along a filament of length 60 cm. What is the electric field at a point 30 cm from one of the ends along the filament direction?SEE MORE QUESTIONS