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15 Cards in this Set
- Front
- Back
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Force of gravity equation |
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Solar tides |
Are about half as high as lunar tides |
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Spring tides |
Full & New moons Earth, moon and sun in alignment Higher high tides Lower low tides Moon and sun tug on earth |
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Neap tides |
Lower high tides Higher low tides Lesser variation low-high 1st and 3rd quarter moons |
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Relativity |
All measurements are relative to the motion of the observer |
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Einstein's gravity |
Local curvature of space-time governs how masses accelerate. Mass governs the local curvature of space-time |
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Newton discovered |
Gravity is universal |
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Universal gravitational constant |
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Gravitational force b/w Earth and an object |
Weight mg |
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Force of gravity when distance is doubled |
1/4 (Gm1m2)/(d^2) |
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When is weight equal to more than mg? 0? |
=to more than mg: support force+acceleration 0=no support force |
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Ocean tides are caused by |
Differences in gravitational pull b/w moon and earth on opposite sides of earth. Moon pulls on one side more than the other |
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Magnitude of gravitational field at Earth's center |
0 Gravitational forces cancel in every direction |
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Einstein viewed the curving of a planet |
As the pth along the curved space (due to gravity) around the planet. |
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If Earth shrank with no change in mass |
Your weight at Earth's surface would increase. Be closer to center of earth. |
