3. [-/6 Points] | DETAILS Il MY NOTES I SERCP11 15.2.P.007. 0Q/5 Submissions Used | ASK YOUR TEACHER I Two uncharged spheres are separated by 3.40 m. If 3.80 x 10" 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. 5Ny o Need Help? Submit Answer 4. [-/6 Points] DETAILS MY NOTES SERCP11 15.3.0P.020. 0/5 Submissions Used ASK YOUR TEACHER Inside a radiation therapy device, 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/s2)? e (b) The electron is initially at rest. What is its speed (in m/s) after 8.50 x 107%s? L s 5. [-/10 Points] | DETAILS || MY NOTES I SERCP11 15.3.P.018. 0/5 Submissions Used | ASK YOUR TEACHER I (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 1.50 nC 2.00 uC + * 2 LS.(}Ocm 42.00 cm-' [ we (b) If a charge of 3.57 puC is placed at this point, what are the magnitude and direction of the force on it? direction Need Help? [[Resdit_J Submit Answer 6. [-/6 Points] DETAILS MY NOTES SERCP11 15.3.P.019. 0/5 Submissions Used ASK YOUR TEACHER An electric field of magnitude 5.25 x 10 N/C points due north at a certain location. Find the magnitude and direction of the force on a6.10 uC charge at this location. meartade [ n direction 7. [-/9 Points] ETAILS MY NOTES SERCP11 16.1.0P.006. 0/5 Submissions Used ASK YOUR TEACHER The figure below shows a small, charged sphere, with a charge of g = +39.0 nC, that moves a distance of d = 0.187 m from point A to point B in the presence of a uniform electric field E of magnitude 300 N/C, pointing right. A B (a) What is the magnitude (in N) and direction of the electric force on the sphere? direction (b) What is the work (in J) done on the sphere by the electric force as it moves from A to B? o (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.) (d) What is the potential difference (in V) between A and B? VeVa=l v Need Help? 8. [-/6 Points] DETAILS MY NOTES SERCP11 16.1.P.004. 0/5 Submissions Used ASK YOUR TEACHER Cathode ray tubes (CRTs) used in old-style televisions have been replaced by modern LCD and LED screens.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 1.40 cm. If the potential difference across the plates was 27.0 kV, find the magnitude of the electric field (in V/m) in the region between the plates. HINT V/m Need Help? Read It Watch It Submit