A 2.10-kg hammer is transported to the Moon. The radius of the Moon is 1.74 × 106 m, its mass is 7.35 × 1022 kg, and G = 6.67 × 10-11 N ? m2/kg2. How much does the hammer weigh on Earth and on the Moon?
What will be an ideal response?
20.6 N (on Earth), 3.40 N (on the Moon)
Physics & Space Science
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The energy stored in a stretched spring is an example of gravitational potential energy
a. True b. False Indicate whether the statement is true or false
Physics & Space Science
The contact force F between the two cylinders in Problem 3.3 may be expressed in terms of load variable W as:
(A) 1.82W (B) 2.5W (C) 2.1W (D) 1.52W
Physics & Space Science
How do the size and chemical composition of a planet determine its internal temperature?
What will be an ideal response?
Physics & Space Science
A jet has an angular length of 10 seconds of arc and flows from a star at a distance of 2,000 pc. How far does this jet extend away from the star?
a. 20,000 pc b. 20,000 AU c. 20, 000 ly d. 20,000 miles e. 20,000 km
Physics & Space Science