4. In Word, a red wavy underline indicates a/an A. hard page break. B. possible misspelled word. C. possible grammatical error. D. AutoCorrect suggestion.
In Word, a red wavy underline indicates a: Possible misspelled word.
s
Question
Updated 202 days ago|3/5/2020 1:13:16 PM
Confirmed by s c o u t [3/5/2020 1:13:07 PM], Edited by s c o u t [3/5/2020 1:13:16 PM]
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10. A child standing on a bus remains still when the bus is at rest. When the bus moves forward and then slows down, the child continues moving forward at the original speed. This is an example of A. an action-reaction pair. B. Newton's Third Law of Motion. C. Newton's First Law of Motion. D. Newton's Second Law of Motion.
Question
Updated 10/14/2016 12:39:38 PM
A child standing on a bus remains still when the bus is at rest. When the bus moves forward and then slows down, the child continues moving forward at the original speed. This is an example of inertia.

Confirmed by yumdrea [10/15/2016 1:50:08 PM]
12. Which of the following statements correctly describes the models put forth by Ptolemy and Copernicus to explain the universe? A. Both of the models were easy to understand and thus were well received by the public almost instantly. B. Through observations, both astronomers presented models where the earth remained stationary. C. The model developed by Copernicus was simpler and had less inconsistencies than Ptolemy’s model. D. The sun was in the center of Ptolemy's model, but the ...
Question
Updated 14 days ago|9/9/2020 9:32:56 PM
The model developed by Copernicus was simpler and had fewer inconsistencies than Ptolemy's model. - correctly describes the models put forth by Ptolemy and Copernicus to explain the universe.
Added 14 days ago|9/9/2020 9:32:56 PM
8. An object with a mass of 70 kilograms is supported at a height 8 meters above the ground. What's the potential energy of the object with respect to the ground? A. 3,430 J B. 560 J C. 5,488 J D. 2,058 J
Question
Updated 8/9/2019 9:35:20 PM
An object with a mass of 70 kilograms is supported at a height 8 meters above the ground. 5,488 joules is the potential energy of the object with respect to the ground.

Solution:
Potential energy = (70 kg) · (9.8 m/s²) · (8 m)

Potential energy = 5,488 kg-m²/s²

Potential energy = 5,488 joules.
4. A mass of gas has a volume of 4 m3, a temperature of 290 K, and an absolute pressure of 475 kPa. When the gas is allowed to expand to 6.5 m3, its new temperature is 277 K. What's the absolute pressure of the gas after expansion? A. 279.2 kPa B. 178.5 kPa C. 293.9 kPa D. 104.1 kPa
Question
Updated 39 days ago|8/15/2020 3:18:42 AM
Solution: n = PV/RT; n = (475000 Pa)(4m3) / (8.314 Pa-m3/mol-K)(290k); n = 788 moles; P = nRT/V; P = (788 moles)(8.314 Pa-m3/mol-K)(277K)/(6.5m3); P = 279,204 Pa or 279 kPa.
Added 39 days ago|8/15/2020 3:18:42 AM
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