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    Volume Questions

    I need some help with some of my homework questions from tutoring, if you can solve any of these and show your working it would be greatly appreciated. 8. A cap of depth 'h' is cut from a sphere of radius 'r' units. Find its volume. Answer: ((pi*h^(2))*(3r-h))/3 15. The portion of the curve...
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    Question on Motors and Generators

    With reference to Lenz's law explain why it is harder to turn a generator when it is connected to a load (e.g. a light bulb) than when it is not connected to a load. (3)
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    Mechanics Question

    Hey, Can someone please show me their working out on how to solve this question... Been stuck on it for the last hour. 2. A particle of mass m moves under a retarding force that is proportional to the cube of the speed. Find how long it takes to travel a distance d from the instant speed was...
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