Answer Happy

PHYSICS 115 SPECIAL HOMEWORK # 10 (Stotic Electricity) 101 Two identical conducting spheres are placed with their centers 0.30 m apart. One is given a charge of +12 x 10°C and the other is given a charge of -18 x 10°C. Find the electric force exerted on one sphere by the other. [ 230 N attraction] 102 The electrons and protons of hydrogen are separated by a distance of 5.3x10 m. Find the magnitude of the each particle exerts on the other: 4. - -1.6 * 10C:2 = +16 * 10°C 18.2 x 10' N 103 Two electrostatic point charges of +60.0 C and +50.0 C exert a repulsive force on each other of 175 N. What is the distance between the two charges? 10.393 m) 104. Two identical tiny metal balls carry charges of +3 nC and -12 nC. They are 3 m apart in vacuum. (a) Compute the force of attraction; (b) The balis are now touched together and then separated to 0.3 cm. Describe the forces on them now. [4 x 10-N attraction: (b) 2.0 x10* repulsion) No 105. If two equal point charges, each of 10, were separated in air by a distance of 1 km, what would be the force between them? [9 kN] 106. +10.0 με +2.0 με -6.0 uc d de 2.0 m 4.0 m (a). Find the repulsion force between 9 and 4 (b). Find the attractive force between , and (c). Find the Sum (a) + (b) [F. = 4.5 x 10°N to the right: 6. = 6.8 x10°N to the right; F = 5.2x10 N to the right] 107. A charge 4 of -6.0 x 10 cand a charge of -3.0 x10*Care separated by a distance of 60.0 cm. Where could be a third charge be placed so that the net electric force on it is zero? [35.2 cm from 9. (24.8 cm from = 108. Two small spheres in a vacuum are 1.5 m apart enter to center. They carry identical charges. How large is the charge on each if the sphere experiences a force of 2.ON? 12.24 x10°C 109. A helium nucleus has a charge of +2e and a neon has a charge of +10e, where e is the quantum charge of 1.60 x 10 C. Find the repulsive force exerted on one by the other when they are separated by a distance of 3.0 nanometers (1 nm - 10 m). Assume the system to be in a vacuum. [5.1 x 10"N = 0.51 nN]