The energy source used to produce most of the electrical energy in the united states is

Do you agree with scientist’s prediction about the warming of alaska and other polar regions?

Energy flows from the producer level to the level. is called

Two identical stars with mass m orbit around their center of mass. each orbit is circular and has radius r, so that the two stars are always on opposite sides of the circle. (a) find the gravitational force of one star on the other. (b) find the orbital speed of each star and the period of the orbit. (c) how much energy would be required to separate the two stars to infinity?