Work-done is given by:
W = dPE
W = PEf - PEi = PEf
Since PEi = 0, at infinity
W = PEf = Potential energy due to all 7 charges at the center
W = PE1 + PE2 + PE3 + PE4 + PE5 + PE6 + PE7
PE is given by:
PE = kq1q2/r
for 4 charges on corners r1 = r2 = r3 = r4 = r
for 3 charge on mid-points r5 = r6 = r7 = 2.7/2 = 1.35 cm = 0.0135
W = kq1*q/r1 + kq2*q/r2 + kq3*q/r3 + kq4*q/r4 + kq5*q/r5 + kq6*q/r6 + kq7*q/r7
q = +5e
W = k*3e*5e/r + k*e*5e/r + k*(-3e)*5e/r + k*(-e)*5e/r + k*3e*5e/0.0135 + k*(-2e)*5e/0.0135 + k*2e*5e/0.0135
Initial 4 quantities will sum up to zero and last two quantites will also sum up to zero.
W = k*15*e^2/0.0135
W = 9*10^9*15*(1.6*10^-19)^2/(0.0135)
W = 2.56*10^-25 J
Please Upvote.
Chapter 24, Problem 044 Your answer is partially correct. Try Your answer is partially correct. Try...
Question 1 x Incorrect. In the figure seven charged particles are fixed in place to form a square with an edge length of 2.4 cm. How much work must we do to bring a particle of charge +9e initially at rest from an infinite distance to the center of the square? -2 +3e Number
In the figure seven charged particles are fixed in place to form a square with an edge length of 6.1 cm. How much work must we do to bring a particle of charge +6e initially at rest from an infinite distance to the center of the square? -2e -3e +8e Number Units
Chapter 2, Problem 015 Z Your answer is partially correct. Try again. In the figure the three particles are fixed in place and have charges g, = 9, = +3e and g3 = +3e. Distance a = 4.95 um. What is the magnitude of the net electric field at point P due to the particles? Number UnitsTN/C or V/m the tolerance is +/-2%
In the figure seven charged particles are fixed in place to form a square with an edge length of 4.2 cm. How much work must we do to bring a particle of charge +8e initially at rest from an infinite distance to the center of the square? -2e -Se +2e +3e te +8e Number Units
Chapter 22, Problem 007 Your answer is partially correct. Try again In the figure the four particles form a square of edge length a-4.10 cm and have charges q1-7.05 nC 92--17.5 nC, q3 = 17.5 nC, and q4 =-7.05 nC. what is the magnitude of the net electric field produced by the particles at the square's center? 91 42 12 2 ds tudy 12 Number TT 741882.47 Unit N/C or V/m ¢ the tolerance is +/-5%
Chapter 21, Problem 010 Your answer is partially correct. Try again. In the figure four particles form a square with edge length a = 1.88 × 10-2 m. The charges are 143.40 x 10-15 c and 3 q. (a) What is q if the net electrostatic force on particle 1 is zero? (b) Is there any value of q that makes the net electrostatic force on each of the four particles zero? No. 수 0 4 NumberTT-0.706 UnitsT the tolerance...
Chapter 13, Problem 035 Your answer is partially correct. Try again. The figure shows four particles, each of mass 40.0 g, that form a square with an edge length of d = 0.600 m. If d is reduced to 0.100 m, what is the change in the gravitational potential energy of the four-particle system? NumberT[5.03e-12 UnitsT the tolerance is +/-2% SHOW HINT GO TUTORIAL LINK TO TEXT LINK TO SAMPLE PROBLEM MATH HELP
ment Chapter 22, Problem 007 [ Your answer is partially correct. Try again. In the figure the four particles form a square of edge length a = 4.00 cm and have charges q1 8.11 nC, q2 = -18.8 nC, q3 = 18.8 nC, and q,--8.11 nC. What is the magnitude of the net electric field produced by the particles at the square's center? 91 42 dy Numb N/C or V/m The number of significant digits is set to 3; the...
Chapter 18, Problem 08 Your answer is partially correct. Try again. In a vacuum, two particles have charges of q1 and q2, where q1 = +4.2f. They are separated by a distance of 0.22 m, and particle 1 experiences an attractive force of 5.1 N. What is the value of q2, with its sign? Number s Units the tolerance is +/-2%
Please answer all problems. Chapter 18, Problem 33 Your answer is partially correct. Try again. Four point charges have the same magnitude of 2.6 × 10-12 C and are fixed to the corners of a square that is 4.5 cm on a side. Three of the charges are positive and one is negative. Determine the magnitude of the net electric field that exists at the center of the square. Number 1159.99038616 Units T N/C the tolerance is +/-296 Open Show...