Four identical particles, each having charge q and mass m, are released from rest at the vertices of a square of side L. How fast is each particle moving when their distance from the center of the square doubles?

The charge q = 1.6 X 10-19 C, mass m = 1.7 X 102 kg, potential difference (voltage) = 1 gigavolt (10° V). If the particle starts from rest, calc. the final velocity of the particle. (in units of m/s). %3D %3D (a) 1.3 X 108 (b) 2.3 X 10 (c) 3.3 X 10% (d) 4.3 X 108

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In the figure, an electron is shot from an infinite distance along the y axis and through the origin. Three other charged particles are fixed in place on the axes. The electron has an initial speed of vo = 15.0 m/s. What is its speed (m/s) when it passes through the origin? 91 = +6e (left and right sides) 92 = -5e d = 2.00 m 7 d 72 71

An alpha particle with kinetic energy 11.0 MeV makes a head-on- collision with a lead nucleus at rest. What is the distance of closest approach of the two particles? (Assume that the lead nucleus remains stationary and that it may be treated as a point charge. The atomic number of lead is 82. The alpha particle is a helium nucleus, with atomic number 2.)

Three identical particles have the same mass m and positive charge Q. They are initial at rest in the corners of an equalateral triangle with sides a. One particle is released, What is the speed of the moving charge when it is a large (aka infinity) distance from the other two?

The potential difference between two parallel plates is 598 V. An alpha particle with mass of 6.64×10-27 kg and charge of 3.20×10-19 C is released from rest near the positive plate.  a) What is the speed of the alpha particle when it reaches the other plate? The distance between the plates is 36.2 cm.

In Rutherford's famous scattering experiments (which led to the planetary model of the atom), alpha particles (having charges of +2e and masses of 6.64 x 10-27 kg) were fired toward a fixed gold nucleus with charge +79e. An alpha particle, initially very far from the gold nucleus, is fired at 1.6 x 107 m/s directly toward the gold nucleus, as in Figure P16.19. How close does the alpha particle get to the gold nucleus before turning around? Ze Figure P16.19

k3 8.99 x 10° Nm?/C?, me 3D 9.11 x 10-31 kg, e %3D 1.6 х 10-19 С, тр 3D 1.67 х 10-27 kg 1. Electrons start from rest and are accelerated east by two plates (parallel to the north/south directions) through a potential difference. They then pass into a second set of parallel plates 1.2 cm long (parallel to the east/west direction). When the electrons leave the second set of plates they are moving at 3.0 x 106 m/s [E 30º N]. You may ignore gravity. (For this question but not in the real world!) Find the potential difference across the first set of plates and the electric field between the second set of plates. 1.2 cm Path of electron First set of plates Second set of plates

The image shows three charges fixed in place. The distance in the image is ? = 0.2 m and the charge is ? = 4×10−16 C An electron (not pictured) initially at point A has a speed of 106 m/s as it moves toward point B. What is the speed of the electron at point B?