An object tied to the end of the string moves in a circle . the force exerted by the string depends on the mass of the object it's speed and radius of the circle what combination of these variables gives the correct dimensions (ml/t) for the force

Curious carl calculated the density of a cube to be 4.50 g/cm3. what is the density of the cube in g/l?

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?