RE 16-56 Problem 31. ecule, or +45 µC, rges, Q1 = -32 µC and Q2 = distance of 12 cm. The electric field at the -57) is zero. How far from Q1 is P? a DNA Assum *16-12 Ga Q2 12 cm *38. (I) Th is 1.85 +45 uC ИС RE 16-57 Problem 32. *39. (II) I +1.0 e electric field E at the origin 0 in two charges is ele sboik the s +26µC A the e 8.0cm third -26µC 8.0 cm RE 16-58 em 33. 8.0 cm FIGU ro unknown point charges, Q1 and Q2 . ne joining them, one-third of the way lectric field is zero (Fig. 16–59). What Prob *40. (II E=0 (a fl *41.1 sbut Q1 3 Q2 E 16-59 n34

RE 16-56 Problem 31. ecule, or +45 µC, rges, Q1 = -32 µC and Q2 = distance of 12 cm. The electric field at the -57) is zero. How far from Q1 is P? a DNA Assum 16-12 Ga Q2 12 cm 38. (I) Th is 1.85 +45 uC ИС RE 16-57 Problem 32. 39. (II) I +1.0 e electric field E at the origin 0 in two charges is ele sboik the s +26µC A the e 8.0cm third -26µC 8.0 cm RE 16-58 em 33. 8.0 cm FIGU ro unknown point charges, Q1 and Q2 . ne joining them, one-third of the way lectric field is zero (Fig. 16–59). What Prob 40. (II E=0 (a fl *41.1 sbut Q1 3 Q2 E 16-59 n34

College Physics

10th Edition

ISBN:9781285737027

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter15: Electric Forces And Electric Fields

Section: Chapter Questions

Problem 24P: (a) Find the magnitude and direction of the electric field at the position of the 2.00 C charge in...

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A uniformly charged disk of radius 35.0 cm carries charge with a density of 7.90 10-3 C/m2. Calculate the electric field on the axis of the disk at (a) 5.00 cm, (b) 10.0 cm, (c) 50.0 cm, and (d) 200 cm from the center of the disk.
A proton is projected in the positive x direction into a region of a uniform electric field E = (6.00 105)iN/C at t = 0. The proton travels 7.00 cm as it comes to rest. Determine (a) the acceleration of the proton. (b) its initial speed, and (c) the time interval over which the proton comes to rest.
(a) Using the symmetry of the arrangement, determine the direction of the electric field at the center of the square in Figure 18.53, given that qa= 1.00C and qc=qd= +1.00 C. (b) Calculate the magnitude of the electric field at the location of q, given that the square is 5.00 cm on a side.
A thin, square, conducting plate 50.0 cm on a side lies in the xy plane. A total charge of 4.00 108 C is placed on the plate. Find (a) the charge density on each face of the plate, (b) the electric field just above the plate, and (c) the electric field just below the plate. You may assume the charge density is uniform.
(a) Find the magnitude and direction of the electric field at the position of the 2.00 C charge in Figure P13.13. (b) How would the electric field at that point be affected if the charge there were doubled? Would the magnitude of the electric force be affected?
The dome of a Van de Graaff generator receives a charge of 2.0 104 C. Find the strength of the electric field (a) inside the dome, (b) at the surface of the dome, assuming it has a radius of 1.0 m, and (c) 4.0 in front the center of the dome. Hint: See Section 15.5 to review properties of conductors in electrostatic equilibrium. Also, note that the points on the surface are outside a spherically symmetric charge distribution; the total charge may be considered to be located at the center of the sphere.
Consider the charge distribution shown in Active Figure 19.31. (i) What are the charges contributing to the total electric flux through surface S? (a) q1 only (b) q4 only (c) q2 and q3 (d) all four charges (e) none of the charges (ii) What are the charges contributing to the total electric field at a chosen point on the surface S? (a) q1 only (b) q4 only (c) q2 and q3 (d) all four charges (e) none of the charges Active Figure 19.31 The net electric flux through any closed surface depends only on the charge inside that surface. The net flux through surface S is ql/0, the net flux through surface S is (q2 + q3)/0, and the net flux through surface S is zero.
In nuclear fission, a nucleus of uranium-238, which contains 92 protons, can divide into two smaller spheres, each having 46 protons and a radius of 5.90 1015 m. What is the magnitude of the repulsive electric force pushing the two spheres apart?
In a certain region of space, the electric field is E = 6.00 103 x2i, where E is in newtons per coulomb and x is in meters. Electric charges in this region are at rest and remain at rest. (a) Find the volume density of electric charge at x = 0.300 m. Suggestion: Apply Gausss law to a box between x = 0.300 m and x = 0.300 m + dx. (b) Could this region of space be inside a conductor?
(a) Find the electric field at the center of the triangular configuration of charges in Figure 18-54., given that qa=+ 2.50 nC, qb=-8.00 nC, and qc=+ 1.50 nC. (b) Is there any combination of charges, other than qa= qb=qc,that will produce a zero strength electric field at the center of the triangular configuration?
A proton is fired from very far away directly at a fixed particle with charge q = 1.28 1018 C. If the initial speed of the proton is 2.4 105 m/s, what is its distance of closest approach to the fixed particle? The mass of a proton is 1.67 1027 kg.
Determine the acceleration of a proton (q= +e, m=1.67x10^-27kg) in an electric field of strengthn0.50kN/C. How many times is the acceleration greater than that due to gravity?