Full text of ' TENTH EDITION RADIOLOGIC SCIENCE for TECHNOLOGISTS PHYSICS, BIOLOGY, and PROTECTION Stewart Carlyle Bushong This page intentionally left blank Review of Basic Physics ELECTROSTATICS 1. The addition or removal of electrons is called electrification. Like charges repel; unlike charges attract. Coulomb’s law of electrostatic force: MAGNETISM 1.

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Every magnet has a north pole and a south pole. Like poles repel; unlike poles attract. Gauss’s law: /V/ 1 /V /2 d 2 4. Only negative charges can move in solids. Electrostatic charge is distributed on the outer surface of conductors. The concentration of charge is greater when the radius of curvature is smaller.

ELECTRODYNAMICS Ohm’s Law: V = IR A series circuit: R 1 /?2 -VW-vA/V'- R4 -V AA- R3 -W A- 1. V t =V 1 + V 2 + V 3 + v 4 2. I is the same through all elements. R t = Ri + Ry + R 3 + R 4 A parallel circuit: ELECTROMAGNETISM 1.

A magnetic field is always present around a conduc¬ tor in which a current is flowing. Changing magnetic fields can produce an electric field. Transformer law: CLASSICAL PHYSICS Linear force: F = ma [(kg)(m/s 2 ) = N] Momentum: p = mv[(kg)(m/s)] Mechanical work (or energy): Work (or E) = Fs [(N)(m) = J] Kinetic energy: E = y 2 77w 2 [(kg)(m 2 /s 2 ) = JJ Mechanical power: P = Fs/t [(N)(m)/s = J/s = W] Conservation of momentum between A and Bfnl*: m A v A + m B v A = m A v A = m B v B ' Conservation of kinetic energy between A and Bfnl*: > Sv550 yamaha 724 driver win7 download. 2 m A (v A f + 34 m B (v B ) 2 = 34 m A (v A 'f = 34 m B (v B ') 2 1. V is the same across each circuit element.

If = Ii ~f~ I 2 ~t~ I3 ~t~ I4 3. Vri = Yri + Yr 2 + Xs + Vr 4 Electric power: P = IV = I 2 R [(A) (V) = W] Work: Work = QV [(C) (V) = JJ Potential: V = W/Q [J/C = V] _ Capacitance: C = Q/V [C/V = F] *v.

Initial velocity; v Final velocity.