Q. A small, plastic sphere of mass m = 107 g is attached to a.
There is an electric field of 113N/C directed along the + x axis. If the string makes an angle 26 degrees with the y axis when the sphere is in stability, what is the charge on the sphere?
Q. When the temperature of a metal cylinder is raised from 0.0°C to 77 °C, its length increases by 0.19 percent? Find the percent change in density.