Objects 1 and 2 attract each other with a gravitational force of 72.0 units. If the mass of object 1 doubles and the distance separating objects 1 and 2 is tripled then the new gravitational force will be

What is the order of the moon, earth, and sun in a lunar eclipse and a solar eclipse?

An object is 10. cm from the mirror, its height is 3.0 cm, and the focal length is 2.0 cm. what is the image height? (indicate the object orientation by including the + or - sign with the answer.) hi = cm +1.33 -1.33 +0.75 -0.75

Could someone me find the answer to this problem.