Two stars are orbiting each other in outer space. If they gradually move so that they end up three times farther apart than they were originally, the new gravitational force on them will be .

Ahanging spring stretches by 35.0 cm when an object of mass 450 g is hung on it at rest. in this situation, we define its position as x = 0. the object is pulled down an additional 18.0 cm and released from rest to oscillate without friction. what is its position x at a moment 84.4 s later? express your answer in cm.