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What is the difference between speed and velocity?

Speed is how fast an object is moving, whereas velocity is an objects speed in a given direction.
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Answered by Matthew T. • Physics tutor
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Why does current split between branches of a parallel circuit, but voltage remains the same for each branch?

Current is the rate of flow of charge in a circuit; you can imagine the flow of electrons as water flowing through a pipe. If the pipe splits into two, some of the flow will go through one pipe and some thro...
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Answered by Rose A. • Physics tutor
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How would you integrate ln(x)

To integrate ln(x) you will need to use intergration by parts. As you can differentiate ln(x) (it is equal to 1/x) and there is an implied 1xln(x). As a result you can differentiate ln(x) and integrate the 1...
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Answered by Dominic D. • Physics tutor
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What determines the frequency of oscillation of a (loaded) spring?

The frequency is reduced by: - Adding extra mass (greater 'm') : This is because the extra mass increases the inertia of the system - Using weaker springs (smaller 'k') : The restoring force of the object at...
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Answered by Giny H. • Physics tutor
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Can you jump a motorcycle into space?

[This question and answer are intended as an example of part of a tutorial on the conservation of energy for an A-Level physics student.] Question: A daredevil is planning the ultimate feat: jumping a motorc...
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Answered by Gabriel V. • Physics tutor
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