Determine the maximum speed an alpha particle consisting of (mass of two protons and two neutrons = 6.65*10 -24 kg) could reach if it moves from rest through a potential difference of 1.15 kV.

Two charges are held apart to store some potential energy. Charge q1 =6.50 microCoulombs and charge q2 =-8.50 microCoulombs. The charges are spaced out by distance d =1.65 m. What is the electric potential energy of the system of charges? (Answer in J)

19.9 Particle 1 has a mass of m₁ = 4.00 × 10 6 kg, while particle 2 has a mass of m₂ = 7.00 × 106 kg. Each has the same electric charge. These particles are initially held at rest, and the two-particle system has an initial electric potential energy of 0.150 J. Suddenly, the particles are released and fly apart because of the repulsive electric force that acts on each one (see the figure). The effects of the gravitational force are negligible, and no other forces act on the particles. At one instant following the release, the speed of particle 1 is measured to be v₁ =172 m/s. What is the electric potential energy at this instant? ulf Number i 9 my 9 9 m1 m2 (a) Initial (at rest) (b) Final 9 m2 Units v2f <

A point charge of 3nC with a mass of 4g is moved from x=1.0 m to x=1.5 m in an electric field of 5 N/C with the same direction as the motion of the charge. Identify the (a) amount of work done on the charge by the electric force, (b) change in potential energy of the charge, and (c) speed of the charge at x=1.5 m, assuming that it started from rest.

A particle has a charge of +1.76 μC and moves from point A to point B, a distance of 0.201 m. The particle experiences a constant electric force, and its motion is along the line of action of the force. The difference between the particle's electric potential energy at A and B is EPEA - EPEB = +8.87E-4 J. Calculate the magnitude of the electric force that acts on the particle.

A proton is initially at rest at a point where the potential is 473 V. Some time later the proton is at a point where the potential is 191 V. If no force other than the electrostatic force acts on the proton, what is its final kinetic energy?

A charged particle with -0.41 C of electric charge is placed in a point in the space where the electrical potential is 27.3 V. What is the electrical potential energy of the particle in the unit of J?

Inside a particular radiation therapy device, there is a uniform electric field with a magnitude 385 N/C pointing in the positive x-direction. An electron, initially at rest, moves a distance of 3.60 cm in this field. (a) How much work (in J) does the electric field do on the electron? J (b) What is the change in potential energy (in J) of the entire system (radiation therapy device plus electron)? J (c) What is the velocity (in m/s) of the electron after it moves the 3.60 cm distance? m/s magnitude direction ---Select--- ✓

A particle has a charge of +1.20 μC and moves from point A to point B, a distance of 0.240 m. The particle experiences a constant electric force, and its motion is along the line of action of the force. The difference between the particle's electric potential energy at A and B is EPEA-EPEB= +9.40 x 10-4 J. (a) Find the magnitude of the electric force that acts on the particle. (b) Find the magnitude of the electric field that the particle experiences. (a) Number i (b) Number i Units Units

Two tiny metal spheres A and B of masses mA = m and mB = have equal positive charges q. The spheres are connected by a massless nonconducting string of length d, which is much greater than the radii of the spheres. NOTE: Express your answers in terms of m, q, d, and eg. (a) What is the electric potential energy of the system? U = (b) Suppose you cut the string. At that instant, what is the acceleration of sphere A? AA = (c) Suppose you cut the string. At that instant, what is the acceleration of sphere B? Ав (d) A long time after you cut the string, what is the speed of sphere A? VA = (e) A long time after you cut the string, what is the speed of sphere B? UB =