A long thread of static charge lies along the x-axis, with a linear charge density 2.5 C/m. Additionally, a charge Q=-2.0 C is placed 5.0 cm below the thread, along the y-axis, as shown. Calculate the magnitude of the subsequent total electric field at the point indicated below (from both the charged line and Q). You can use the formula for the thread derived in lecture**: E = 2 Your answer should be on the order of 1011 N/C, so just enter the coefficient. (For example, if you calculated 3.26 x 1011 N/C, input 3.26). 7.0 cm 5.0 cm 7.0 cm 0 EQ Q=-2.0 C Ethread λ=+2.5 C/m x when physics problems say something is 'long' assume you may use the approximation for when it is basically infinite. **(or possibly an extra video, this is a long chapter!)

Use the figure below. There is a point charge of 6.20 microCoulombs inside a spherical conducting shell with inner radius a=3.10 m and outer radius b=3.35 m. There is a total charge of  15.50 microCoulombs on the spherical shell.   What is the electric field at r=2.85 m from the point charge (ie inside the shell)? (Treat + as away from the point charge and negative as toward the point charge. Answer in N/C).

A uniformly charged rod of length L and total charge Q lies along the x axis as shown in in the figure below. (Use the following as necessary: Q, L, d, and ke.) Ey= P d Ⓡ (a) Find the components of the electric field at the point P on the y axis a distance d from the origin. Ex= Eyz (b) What are the approximate values of the field components when d >> L? Ex L Explain why you would expect these results. This answer has not been graded yet. Need Help? Read It

A hollow metal sphere has 5 cm and 9 cm inner and outer radii, respectively, with a point charge at its center. The surface charge density on the inside surface is -150 nC/m². The surface charge density on the exterior surface is +150 nC/m² Part E What is the strength of the electric field at point 12 cm from the center? Express your answer to three significant figures and include the appropriate units. ► View Available Hint(s) E = Di μA Submit Xb a b X 10n Value Units You have already submitted this answer. Enter a new answer. No credit lost. Try again. Previous Answers ?