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University of Oxford
University of Cambridge
Imperial College London
University College London
London School of Economics
Harvard
Stanford
Princeton
University of Chicago
MIT
Duke
University of Pennsylvania
Cornell
University of Oxford
University of Cambridge
Imperial College London
University College London
London School of Economics
Harvard
Stanford
Princeton
University of Chicago
MIT
Duke
University of Pennsylvania
Cornell

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Explain why protocols are used in network communications.

Jojo AIAI Hint

Think about how people from different countries use different languages to communicate with each other. Similarly, computers on a network may use different languages (protocols) to communicate. So, protocols are needed to make sure that they can "speak the same language" and understand each other properly.

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Suggested study materials

Having trouble with a specific topic? Jojo AI can also suggest relevant study materials for you to brush up on your knowledge.

Explain why a centripetal force is needed for the planet to be in a circular orbit.

Student responseThe planet needs a centripetal force to maintain its velocity. Without the force, the planet will slow down and eventually stop.
Jojo AIAI Feedback

Great effort! But let's make sure we have a clear understanding. The planet's velocity depends on both its speed and direction. The role of the centripetal force is to continuously change the direction of the planet's velocity vector and not its speed, keeping it in a circular orbit. Keep up the good work!

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