OSUNIPHYS1 24.3.P.051. ASK YOUR TEACHER PRACTICE ANOTHER (a) What is the potential difference (in V) between two points situated 19 cm and 38 cm from a 8.0 pC point charge? (Enter the magnitude.) v (b) To what location should the point at 38 cm be moved to increase this petential difference by a factor of twa? 4. [-/1 Points] () 253 cm from the 8.0 UC point charge ( -25.3 cm from the 8.0 HC point charge 0.253 cm from the 8.0 HC point charge & infinity Additional Materials 1 Reading Submit Answer 5. [-/1 Points] OSUNIPHYS1 24.3.WA.015. ASK YOUR TEACHER PRACTICE ANOTHER In nuclear fission, a nucleus splits roughly in half. (a) What is the electric potential 6.24 x 10~"% m from a fragment that has 84 protons in it? |V (b) What is the electric potential energy in MeV of a similarly charged fragment at this distance? MeV Additional Materials L Reading 6. [-/1 Points] OSUNIPHYS1 24.3.WA.017. ASK YOUR TEACHER PRACTICE ANOTHER In one of the classic nuclear physics experiments at the beginning of the 20 century, an alpha particle was accelerated towards a gold nucleus and its path was substantially deflected by the Coulomb interaction. If the initial kinetic energy of the doubly charged alpha nucleus was 5.98 MeV, how close to the gold nucleus (79 protons) could it come before being turned around? |m Additional Materials L Reading Submit Answer 7. [-/2 Points] OSUNIPHYS1 24.3.WA.020. ASK YOUR TEACHER PRACTICE ANOTHER Three point charges q,, g,, and g, are situated at three corners of a rectangle as shown in the diagram below. Here g, = +8.00 ,C, 5 = -8.00 C, g4 = +3.00 uC. h 9 2.50 cm 5.00 cm . (a) What is the electric potential at the free corner where there is no charge? [ v (b) What charge should be placed at the free corner for the electric potential at the center of the rectangle to be zero? Include the sign of the value in your answer. { uc Additional Materials L Reading 14. [-/1.5 Points] DETAILS OSUNIPHYS1 24.6.P.070. A simple and common technique for accelerating electrons is shown in the figure below, where there is a uniform electric field between two plates. T e Electrons are released, usually from a hot filament, near the negative plate, and there is a small hole in the positive plate that allows the electrons to continue moving. (a) Calculate the acceleration (in m/s2) of the electron if the field strength is 8.20 x 10* N/C. (Enter the magnitude.) m / s2 (b) Explain why the electron will not be pulled back to the positive plate once it moves through the hole. O The force of gravity is too strong. O There is no field outside the plates. O The other side of the positive plate also has a negative charge. Additional Materials Reading Submit Answer15. [-/1.5 Points] DETAILS OSUNIPHYS1 24.4.WA.039. MY NOTES ASKYC In the diagram below, each division on the horizontal axis (the displacement s) is 0.10 m while each division on the vertical axis (the electric potential V) is 1.0 V. What is the electric field component along the displacement axis s in each of the regions specified below? Include the sign of the value in your answer, vv) 6.0 10 20 0.20 040 0.60 0.80 s(m) (a) from 0.0 m to 0.30 m v/m (b) from 0.30 m to 0.0 m v/m (