Two uncharged spheres are separated by 1.70 m. If 2.40 x 1012 electrons are removed from one sphere and placed on the other, determine the magnitude of the Coulomb force (in N) on one of the spheres, treating the spheres as point charges. L w An electric field of magnitude 5.25 x 10 N/C points due south at a certain location. Find the magnitude and direction of the force on a7.35 uC charge at this location. magnitude N direction ---Select--- v Two charged particles are a distance of 1.62 m from each other. One of the particles has a charge of 6.89 nC, and the other has a charge of 3.78 nC. (a) What is the magnitude (in N) of the electric force that one particle exerts on the other? [ n (b) 1Is the force attractive or repulsive? O attractive O repulsive Cathode ray tubes (CRTs) used in old-style televisions have been replaced by modern LCD and LED screens. Part of the CRT included a set of accelerating plates separated by a distance of about 1.52 cm. If the potential difference across the plates was 24.0 kV, find the magnitude of the electric field (in V/m) in the region between the plates. Inside a vacuum tube, an electron is in the presence of a uniform electric field with a magnitude of 330 N/C. (a) What is the magnitude of the acceleration of the electron (in m/sz)? s (b) The electron is initially at rest. What is its speed (in m/s) after 8.00 x 1079 g? s (a) Determine the electric field strength at a point 1.00 cm to the left of the middle charge shown in the figure below. (Enter the magnitude of the electric field only.) 6.00 uC 150 uC 2.00 uC + @ 3 L 3.00 cm 4'2.00 cm" o N/C (b) If a charge of 4.72 uC is placed at this point, what are the magnitude and direction of the force on it? magnitude :] N The figure below shows a small, charged sphere, with a charge of g = +44.0 nC, that moves a distance of d = 0.189 m from point A to point B in the presence of a uniform electric field E of magnitude 300 N/C, pointing right. E _ A B D 'll.d | @ (a) What is the magnitude (in N) and direction of the electric force on the sphere? magnitude N direction ---Select-- i (b) What is the work (in J) done on the sphere by the electric force as it moves from A to B? I (c) What is the change of the electric potential energy (in J) as the sphere moves from A to B? (The system consists of the sphere and all its surroundings.) PEB_PEA=S] (d) What is the potential difference (in V) between A and B