Earth Questions


QSuppose the moon had twice its present mass and still orbited Earth at the same distance the ocean tides would?

one . the tide of the ocean off the moon would rise , and the tide would drop another
b. ocean tides would be the same as they are now

c. both ocean tides would be smaller
d. the ocean tide would fall off the moon , and the tide would rise another
e. both ocean tides would be higher

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#1SimAnswered at 2012-12-22 13:17:17
e. both ocean tides would be higher
#2FEAAnswered at 2013-02-19 10:56:23
No Gintable is correct. Mathematically , the full deduction is somewhat complicated , but simply tidal acceleration ( and therefore force) at a given point is the difference between gravity . acceleration at the center of the earth due to the moon and lunar gravity . acceleration at a given point on the Earth's surface . Because the ratio r / d is small - where r is the radius of the Earth and d the distance between the center of mass of the Earth and the moon - tidal forces on opposite sides will be similar in magnitude but opposite opposite . Increased mass increases Lunar tide height on both sides of the Earth.
* Added * Upon further reflection , this question is ambiguously worded . The tidal force on the side of Earth facing the moon , and the diametrically opposite side , will be larger . This means that the greater the high tide . But if
#3JkimAnswered at 2013-06-16 20:19:53
Gintable is wrong.
the answer is a.
if the moon has more mass then it will have a greater gravitational pull. if is has a greater pull the side facing the moon will have a higher tide. If this side is having a higher tide then more water is being drawn from the other side of the world meaning they will experience a lower tide.
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Suppose the moon had twice its present mass and still orbited Earth at the same distance the ocean tides would?

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