What is the strength of the electric field at point 4 cm from the center? Express your answer to three significant figures and include the appropriate units. B. What is the strength of the electric field at point 8 cm from the center? Express your answer as an integer and include the appropriate units. C. 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.

For an electric field in the form of E=2z(k), what is the amount of electric charge in the box?

Part A The figure(Figure 1) shows three charges at the corners of a square. Write the electric field at point P in component form. Assume that x-axis is horizontal and points to the right, and y-axis points upward. Express your answer in terms of the variables Q, L, unit vectors i, j and appropriate constants. Figure 1 of 1 *Answer should include i but not j L L 4Q

Part A An electron is moving east in a uniform electric field of 1.55 N/C directed to the west. At point A, the velocity of the electron is 4.52x105 m/s pointed toward the east. What is the speed of the electron when it reaches point B, which is a distance of 0.365 m east of point A? Express your answer in meters per second. ? Ve = 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 1.88x1o4 m/s , again pointed towards the east. What is the speed of the proton at point B? Express your answer in meters per second. Up = m/s

What is the magnitude of the force on the 1.0 nC charge in (Figure 1)? Express your answer with the appropriate units. HÀ Fon 1 = Value Units Submit Figure 1 of 1 Part B 1.0 nC What is the direction of the force in the part A? Specify the direction as an angle counterclockwise from the positive x -axis. + Express your answer in degrees. 1.0 cm 1.0 cm above horizontal 60° 60° 2.0 nC + + 2.0 nC Submit 1.0 cm

A small positively charged plastic ball of mass m and charge q is suspended by a massless string of length L in a uniform electrical field E as shown in the attached image. The ball is in equilibrium when the string makes an angle of θ with the vertical. Note that the ball is under the influence of both the electric field E and the earth's gravitational force g. a. Write an equation for the horizontal electrical force acting on the ball in terms of the relevant variables provided above b. Write an equation for the tension T in the string, using any or all of the relevant variables provided above and/or any relevant constants (g, G, k). Include a sentence explaining the reasoning behind your equation (there are two possible ways to set up this equation).

Two charged spheres are 2 m apart from each other. The blue sphere has a charge of +498 µC and is attracting the red sphere with a force of 836 N. Find the charge of the red sphere in mC. How to answer: Round your final answer to 1 decimal place. Write 1.2 to represent the red charge has a positive charge OR -1.2 to represent it has a negative charge. Answer in mC.

Two electrons in a vacuum exert force of F = 4.63E-08 N on each other. They are then moved so that they are separated by x = 6.4 times their original distance. a.  What is the force, in newtons, that the electrons experience at the new separation distance?  b. How far apart, in meters, were the electrons originally?

5. Electric charge qs is placed at the corner of a right-triangle shaped plate. The width W and diagonal length D of the plate are shown in the diagram. Location A a) A location at the exact middle of the vertical leg of the right triangle is defined by position vector TA. Express A in component form using the chosen coordinate system below. Your expression should only contain variables from the problem statement or diagram. W_ i. A ii. W D b) The following equation describes the electric field due to charge qs at location A: kqs Es = 112 PA Electric charge qs Chosen coordinate System ↑ x ŷ î Nm² с k = 8.99x10⁹. HW 18 Draw the direction of the electric field due to charge qs at location A if qs = +Q. Draw the direction of the electric field due to charge qs at location A if qs = ∙Q.

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