2 23 2014 HW 3 Tyler Bogard 1251 12 40 Spring 2014 Instructor Sharvil Desai WebAssign HW 3 Homework Current Score 36 38 Due Tuesday February 4 2014 02 30 PM EST The due date for this assignment is past Your work can be viewed below but no changes can be made 1 2 2 points Previous Answers SerPSE8 24 CQ 001 The Sun is lower in the sky during the winter than it is during the summer a How does this change affect the flux of sunlight hitting a given area on the surface of the Earth The luminous flux on a given area is greater The luminous flux on a given area is less The luminous flux on a given area remains unchanged b How does this change affect the weather On average it results in colder weather On average it results in warmer weather On average it has no effect on the weather http www webassign net web Student Assignment Responses view key dep 8448413 1 8 2 23 2014 HW 3 2 1 2 points Previous Answers SerPSE8 24 OQ 007 Two solid spheres both of radius 5 cm carry identical total charges of 2 C Sphere A is a good conductor Sphere B is an insulator and its charge is distributed uniformly throughout its volume i How do the magnitudes of the electric fields they separately create at a radial distance of 6 cm compare EA EB 0 EA EB 0 EA EB 0 0 EA EB 0 EA EB ii How do the magnitudes of the electric fields they separately create at radius 4 cm compare EA EB 0 EA EB 0 EA EB 0 0 EA EB 0 EA EB 3 1 1 points Previous Answers SerPSE8 24 OQ 008 A coaxial cable consists of a long straight filament surrounded by a long coaxial cylindrical conducting shell Assume charge Q is on the filament zero net charge is on the shell and the electric field is E1 at a particular point P midway between the filament and the inner surface of the shell Next you place the cable into a uniform external field E What is the x component of the electric field at P then 0 between 0 and E1 E1 between 0 and E1 E1 4 4 5 points Previous Answers SerPSE8 24 OQ 010 A large metallic spherical shell has no net charge It is supported on an insulating stand and has a small hole at the top A small tack with charge Q is lowered on a silk thread through the hole into the interior of the shell i What is the charge on the inner surface of the shell http www webassign net web Student Assignment Responses view key dep 8448413 2 8 2 23 2014 HW 3 Q Q 2 0 Q 2 Q ii What is the charge on the outer surface of the shell Q Q 2 0 Q 2 Q iii The tack is now allowed to touch the interior surface of the shell After this contact what is the charge on the tack Q Q 2 0 Q 2 Q iv What is the charge on the inner surface of the shell now Q Q 2 0 Q 2 Q v What is the charge on the outer surface of the shell now Q Q 2 0 Q 2 Q http www webassign net web Student Assignment Responses view key dep 8448413 3 8 2 23 2014 HW 3 5 3 3 points Previous Answers SerPSE8 24 P 004 WI Consider a closed triangular box resting within a horizontal electric field of magnitude E 7 28 104 N C as shown in the figure below a Calculate the electric flux through the vertical rectangular surface of the box 2 184 2 18 kN m2 C b Calculate the electric flux through the slanted surface of the box 2 184 2 18 kN m2 C c Calculate the electric flux through the entire surface of the box 0 0 kN m2 C 6 2 2 points Previous Answers SerPSE8 24 P 010 WI The electric field everywhere on the surface of a thin spherical shell of radius 0 755 m is of magnitude 919 N C and points radially toward the center of the sphere a What is the net charge within the sphere s surface 58 3 58 3 nC b What is the distribution of the charge inside the spherical shell The negative charge has a spherically symmetric charge distribution The negative charge has an asymmetric charge distribution The positive charge has an asymmetric charge distribution The positive charge has a spherically symmetric charge distribution http www webassign net web Student Assignment Responses view key dep 8448413 4 8 2 23 2014 HW 3 7 1 1 points Previous Answers SerPSE8 24 P 019 A particle with charge Q 5 50 C is located at the center of a cube of edge L 0 140 m In addition six other identical charged particles having q 1 C are positioned symmetrically around Q as shown in the figure below Determine the electric flux through one face of the cube 9 4119 9 42 kN m2 C 8 5 5 points Previous Answers A nonconducting thin layer carries charge with a uniform density of 9 00 C cm2 a What is the electric field 6 30 cm in front of the wall if 6 30 cm is small compared with the dimensions of the wall magnitude 5082448611 direction 5 08e 09 N C away from the wall away from the wall b Does your result change as the distance from the wall varies Assume that the distance from the wall is small compared to the width and height of the wall Yes No c The nonconducting wall is replaced with a thick conducting wall with the same surface charge density on the right side of the conducting wall as was on the thin insulating layer What is the electric field 6 30 cm in front of just outside the conducting wall if 6 30 cm is small compared with the dimensions of the wall magnitude 1 016489E10 direction away from the wall 1 02e 10 N C away from the wall 9 2 2 points Previous Answers SerPSE8 24 P 032 WI A cylindrical shell of radius 7 00 cm and length 2 41 m has its charge uniformly distributed on its curved surface The magnitude of the electric field at a point 18 6 cm radially outward from its axis measured from the midpoint of the shell is 36 0 kN C a Find the net charge on the shell 897 5 898 nC b Find the electric field at a point 4 00 cm from the axis measured radially outward from the midpoint of the shell 0 0 kN C http www webassign net web Student Assignment Responses view key dep 8448413 5 8 2 23 2014 HW 3 10 4 4 points Previous Answers SerPSE8 24 P 040 A square plate of copper with 49 0 cm sides has no net charge and is placed in a region of uniform electric …