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Fun, engaging games to boost memory, math fluency, typing speed, and English skills—perfect for learners of all ages.
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Knowledge
Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
Define a central force.
💡 Hint: Think about how the force relates to the distance.
Question 2
Easy
What is an example of a conservative force?
💡 Hint: Consider forces where potential energy can be defined.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What defines a central force?
- A force that changes with speed
- A force depending on distance
- A force that can act at angles
💡 Hint: Focus on the relationship between two bodies.
Question 2
Are central forces always conservative?
- True
- False
💡 Hint: Remember the definitions of conservative forces.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Calculate the angular momentum of a planet of mass m rotating around the sun at distance r with tangential velocity v.
💡 Hint: Recall the definition of angular momentum in rotational dynamics.
Question 2
If the potential energy of a particle in a central force field is given as V(r) = -k/r, derive the force exerted by the particle.
💡 Hint: Use calculus to find the relationship between potential energy and force.
Challenge and get performance evaluation