An alpha particle, which has charge 3.20 ✕ 10−19 C, is moved from point A, where the electric potential is 2.60 ✕ 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. Answer expressed in eV.

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

A lightning storm approaches an area where the electric potential from the cloud to the ground is 1.5 (10)' v. The distance to the ground is 50 meters. A discharge (a lightning strike) delivers 20 C of charge to the ground. How much energy is contained in the discharge? O 3 (10)8 ) O 7.5(10)5 J O 3(10)5J O 1.5(10)10)

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How much work is done (by a battery, generator, or some other source of potential difference) in moving Avogadro's number of electrons from an initial point where the electric potential is 6.50 V to a point where the electric potential is -8.10 V? (The potential in each case is measured relative to a common reference point.)Two insulating spheres have radii 0.300 cm and 0.500 cm, masses 0.150 kg and 0.700 kg, and uniformly distributed charges of -2.00 µC and 3.50 µC. They are released from rest when their centers are separated by 1.00 m. (a) How fast will each be moving when they collide? (Hint: Consider conservation of energy and of linear momentum.) m/s (lighter sphere) m/s (heavier sphere)

An electron in an x-ray machine is accelerated through a potential difference of  1.0 × 104 V before it hits the target. What is the kinetic energy of the electron in electron volts?

Problem 7:  Consider two points in an electric field. The potential at point 1, V1, is 26 V. The potential at point 2, V2, is 159 V. An electron at rest at point 1 is accelerated by the electric field to point 2. Part (a)  Write an equation for the change of electric potential energy ΔU of the electron in terms of the symbols given.   Part (b)  Find the numerical value of the change of the electric potential energy in electron volts (eV).  Part (c)  Express v2, the speed of the electron at point 2, in terms of ΔU, and the mass of the electron me.  Part (d)  Find the numerical value of v2 in m/s.

The graph in the figure shows the variation of the electric potential V (measured in volts) as a function of the radial direction T (measured in meters), For which range or value of T is the magnitude of the electric field the largest? (m) O from r = 3 m to r= 4 m from T=0 m to r= 1 m from r = 1 m to r= 2 m O at r= 4 m O at r = 3 m from T = 6 m to r= 8 m O from T = 4 m to r= 6 m Submit Previous Answers Request Answer

The two charges in the figure below are separated by d = 3.50 cm. (Let q, = -14.5 nC and q, = 29.5 nC.) К60.0° В d 92 (a) Find the electric potential at point A. kV (b) Find the electric potential at point B, which is halfway between the charges. kV

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