227f11hw02ans

# 227f11hw02ans - MasteringPhysics Assignment Print View...

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H2 Electric Fields, Electric Flux, Gauss's Law & Its Applications (21.4 -- 21.6, 22.1 -- 22.5) Due: 11:59pm on Monday, September 19, 2011 Note: You will receive no credit for late submissions. To learn more, read your instructor's Grading Policy Problem 21.24 Description: A particle has a charge of - Q. (a) Find the magnitude of the electric field due to this particle at a point located a distance s directly above it. (b) Find the direction of the electric field due to this particle at a point located a distance s ... A particle has a charge of 3.50 . Part A Find the magnitude of the electric field due to this particle at a point located a distance 0.300 directly above it. Use 8.85 × 10 12 for the permittivity of free space. ANSWER: N/C Part B Find the direction of the electric field due to this particle at a point located a distance 0.300 directly above it. ANSWER: up away from the particle down toward the particle Part C Settings per Student Student View Summary View Diagnostics View Print View with Answers MasteringPhysics: Assignment Print View http://session.masteringphysics.com/myct/assignmentPrintView... 1 of 18 9/12/11 2:50 PM

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At what distance from this particle does its electric field have a magnitude of 11.6 ? ANSWER: m Problem 21.39 Description: (a) An electron is moving east in a uniform electric field of magnitude E directed to the west. At point A, the velocity of the electron is v_1 pointed toward the east. What is the speed of the electron when it reaches point B, which is a distance... Part A An electron is moving east in a uniform electric field of magnitude 1.47 directed to the west. At point A , the velocity of the electron is 4.55 × 10 5 pointed toward the east. What is the speed of the electron when it reaches point B , which is a distance of 0.400 east of point A ? Use 1.60 × 10 19 for the magnitude of the charge on an electron and 9.11 × 10 31 for the mass of an electron. ANSWER: m/s Part B A proton is moving in the uniform electric field of part (a). At point A , the velocity of the proton is 1.87 × 10 4 , again pointed towards the east. What is the speed of the proton at point B ? Use 1.67 × 10 27 for the mass of a proton. MasteringPhysics: Assignment Print View http://session.masteringphysics.com/myct/assignmentPrintView... 2 of 18 9/12/11 2:50 PM
ANSWER: m/s Exercise 22.2 Description: A flat sheet is in the shape of a rectangle with sides of lengths 0.400 m and 0.600 m. The sheet is immersed in a uniform electric field of magnitude E that is directed at 20 degree(s) from the plane of the sheet (the figure ). (a) Find the... A flat sheet is in the shape of a rectangle with sides of lengths 0.400 and 0.600 . The sheet is immersed in a uniform electric field of magnitude 74.5 that is directed at 20 from the plane of the sheet (the figure ). Part A Find the magnitude of the electric flux through the sheet. Express your answer using two significant figures.

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