1. Two small objects are placed 0.150 meters apart. One of the objects carries an electric charge of25.0nC and the other object carries an electric charge of 60.0C. Calculate the strength of the electricforce between these two objects.2. A proton is released in an electric field which has a strength of 125,000 %. Calculate the accelerationof the proton3. A metal sphere has a radius of 0.120m (this is the size of a basketball) and it carries an electric chargeof 625nC. Calculate the strength of the electric field at the surface of the sphere.4. Considering that an electric field larger than 3.0 10% 4 will cause electrical breakdown of air,calculate the maximum charge that can be placed on a sphere which has a radius of 0.120m.

Chapter 18 Assignment Name 1. Two small objects are placed 0.150 meters apart. One of the objects carries an electric charge of 25.0w: and the other object carries an electric charge of 60.0116. Calculate the strength of the electric force between these two objects. 2. A proton is released in an electric field which has a strength of 125,000 E. Calculate the acceleration of the proton. 3. A metal sphere has a radius of 0.120m (this is the size of a basketball) and it carries an electric charge of 625nC. Calculate the strength of the electric field at the surface of the sphere. 4. Considering that an electric field larger than 3.0 x 10'3 gwill cause electrical breakdown of air, calculate the maximum charge that can be placed on a sphere which has a radius of 0.120111