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the gravitational force of attraction between two objects depend on their masses and the distance between them.if so,the mass of both the objects is doubled.what change is brought about in the distance between them to ensure that the force of attraction between them does not change?
- Balancing Brooms: It’s Not About the Planets (wired.com)
- Astronomers using NASA’s Hubble discover quasars acting as gravitational lenses (eurekalert.org)