An alpha particle, which has charge 3.20 ✕ 10−19 C, is moved from point A, where the electric potential is 3.00 ✕ 103 J/C, to point B, where the electric potential is 4.90 ✕ 103 J/C. Calculate the work in electron volts done by the electric field on the alpha particle. eV

Part (a)  Write an equation for the change of electric potential energy ΔU of the proton, in terms of the symbols given and the charge of the proton e.  ΔU = ______ Part (b)  Solve for the numerical value of the change of the electric potential energy in electron volts (eV).  ΔU = ______ Part (c)  How much work is done by the electric force during the motion of the proton in J?  W = _______

E, (V/m) 200 100 x (m) 1 2 3 in the figure provided, the potential at the origin is -60.0 V. What is the potential at x = 3 m? O 90 V O -310 V О -90 V O -560 V

A small object has a charge of q = 2e, where e is the charge on an electron. (a) Determine the electric potential (in V) due to the charge at a distance r = 0.360 cm from the charge. V (b) Determine the electric potential difference (in V) between a point that is 2r away and this point, that is V(2r) - V(r). V (c) Determine the electric potential difference (in V) between a point that is 2 V (d) How would the answe swers change if the electrons are replaced by protons? The sign of answer (a) would change. The sign of answer (b) would change. The sign of answer (c) would change. The sign of all answers would change. All answers would remain the same. ✓(7) – v(r). - away and this point, that is V