A line of charge is placed along the negative x axis form x=-0.4m to x=0. The charge is uniformly distributed with linear charge density 6.02pC/m. A proton is released from rest at a point on the positive x axis at 6.16m. When the proton has moved a distance of 10cm, determine its speed in m/s.

Three (3) point charges with q = 7.50 uC are initially held fixed as shown in the figure. The charges are then released, and all three move in response to the electric force between them. Assuming L = 250m, what is the sum of the kinetic energies of the three particles when they are very far apart? Show your work and use significant figures in the final answer.  [ Answer: 3.87 J ]

Two pith balls, each with a mass of 1.4 g, are attached to non-conducting threads and suspended from a common hook. Each thread has a length of 16.2 cm. The balls are then given an identical charge, which causes them to separate. In equilibrium, the threads are separated by an angle of 6.9°. Calculate the charge on each pith ball, in coulombs (C). Be clear and show all your work.

A 3.5μF capacitor is connected to a 12 V battery and allowed to fully charge. The capacitor is then isolated from the battery, and a material with a dielectric constant of 3 is inserted between the plates. Which of the following is the change in potential difference across the plates of the capacitor as the dielectric is inserted? Show your work. 0 4 V 6 V 8 V 24 V

Carefully study the following plot of electric field E in  N/C versus distance r in  m and answer the questions that follow. The electric field is directed radially outward, and the variation of E with r is independent of direction. Referring to the figure above, determine the work done by the electric field on a 2.6μ C charge moved from A to B.

You Answered Correct Answer A line of charge is placed along the negative x axis from x=-0.4m to x=0. The charge is uniformly distributed with linear charge density 3.06pC/m. A proton is released from rest at a point on the positive x axis 2.53m. When the proton has a speed of 472.1m/s, how far will it have moved (in m}? 1.0975 margin of error +/-1%

Show all your work. Pay attention to the number of significant digits. The uniform electric field 240N/C [right] performs work of 3.0J by moving a particle with the charge          -0.61C from point of A to point B.  a- Determine the electrical potential difference between final and initial point.  b-What is the particle displacement (the magnitude and the direction)? 2.Two protons start at rest with a separation of 5.3x10-10 m. One of the protons is released and starts accelerating away from the second proton. Calculate the maximum velocity of the moving proton.