For the vectors in Fig. E1.24, use the method of components to find the magnitude and direction of (a) the vector sum (b) the vector sum (c) the vector difference (d) the vector difference
Physics Electricity and Magnetism (Professor Perdekamp) : Week 1 Notes Prelecture: Coulomb’s Law Electric Charge Gravity Electric Charge What is charge Electric charge is responsible for electric forces. Two kinds of electric charge: positive and negative Two kinds of electric force: attractive and repulsive Note: this is in contrast to gravitational force where mass only attracts Building Blocks of Matter Conductors: Insulators: Electrons free to move Electrons don’t/cannot move (metals) (plastics) Coulomb’s Law (1785) ex) r^ determines direction F1,2nd F 2,1Newton’s 3rd Law pairs! If the resultant number is: positive → force is repulsive negative → force is attractive Uni