Explain how gravity is used to explain the presence of the tides we experience on Earth

What will be an ideal response?


Tides are produced by small differences in the gravitational force exerted on different parts of an object. The side of Earth nearest the Moon feels a larger force than the side farthest away. Relative to Earth's center, small forces are left over, and they cause the tides. Both the Moon and the Sun produce tides on Earth; sometimes they add together, and sometimes they partially cancel.

Physics & Space Science

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At the distance of Jupiter (6 times further away from the Sun than Earth) the amount of sunlight received per square centimeter different by what factor?

A) 6 times less B) 12 times less C) 36 times less D) 6 times more E) 12 times more

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Before about 4 billion years ago the universe was:

A) radiation dominated. B) quark dominated. C) lepton dominated. D) matter dominated. E) dark energy dominated.

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When an automobile moves with constant velocity the power developed is used to overcome the frictional forces exerted by the air and the road. If the power developed in an engine is 50.0 hp, what total frictional force acts on the car at 55 mph (24.6 m/s)? One horsepower equals 746 W.

What will be an ideal response?

Physics & Space Science

The statement with the greatest acceptance and predictive value from a scientist is the __________

Fill in the blank(s) with the appropriate word(s)

Physics & Space Science