An electron is in a vacuum near earth's surface and located at y = 0 m on a vertical y axis. at what value of y should a group of 28 electrons be placed such that its electrostatic force on the first electron balances the gravitational force on the first electron?

Which are advantages of renewable resources? check all that apply. renewable energy supplies are completely reliable everywhere. some renewable resources will never be used up. little or no waste is produced by renewable resource plants. electricity can be generated in large quantities. many renewable energy facilities have lower operating costs.