A mass which weighs 19.6 Newtons on Earth is 2.3 meters away from a 2.00 kg mass

(a) Determine their mutual gravitational attraction to each other.
(b) How much work would have to be done to put a very large distance between the two masses?


(a) 5.0 × 10-11 N
(b) 12. × 10-11 Joules

Physics & Space Science

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Suppose that the Department of Energy develops a new reversible engine that has a coefficient of performance (COP) of 4.0 when operated as a refrigerator and a COP of 5.0 when operated as a thermodynamic pump

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The three major types of seawater movement are ______________, currents, and tides

Fill in the blank(s) with correct word

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When discussing stellar lives, astronomers divide stars by mass into low-mass, intermediate-mass, and high-mass stars. Which category includes our Sun?

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