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A planet orbits a star in an elliptical path. What remains constant throughout i
A planet orbits a star in an elliptical path. What remains constant throughout its orbit?
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Practice Questions
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Q1
A planet orbits a star in an elliptical path. What remains constant throughout its orbit?
Angular momentum
Kinetic energy
Potential energy
Total energy
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Angular momentum is conserved in the absence of external torques, even in elliptical orbits.
Questions & Step-by-step Solutions
1 item
Q
Q: A planet orbits a star in an elliptical path. What remains constant throughout its orbit?
Solution:
Angular momentum is conserved in the absence of external torques, even in elliptical orbits.
Steps: 5
Show Steps
Step 1: Understand that a planet moves around a star in a path that is not a perfect circle, but an ellipse.
Step 2: Learn about angular momentum, which is a measure of how much motion an object has while rotating around a point.
Step 3: Recognize that angular momentum depends on the planet's speed and distance from the star.
Step 4: Know that in space, if no outside forces are acting on the planet (like other stars), its angular momentum stays the same.
Step 5: Conclude that even as the planet moves closer to or farther from the star in its elliptical orbit, its angular momentum remains constant.
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