Imagine you were provided with: 3 cardboard grey boxes labeled P, Q and R; 3 pieces of string, a complete stand.   With 3 grey boxes labeled P, Q and R. One of them contains a ferromagnetic material, another one contains a magnet  while the third contains a non magnetic material. Without opening them up, run tests on them and distinguish between them. No other material may be used to carry out the test! Give a brief outline of your procedure, Observation/results, Calculations, Inference, Conclusion, highlighting any precautions you have taken to improve on the accuracy of your results.

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Imagine you were provided with: 3 cardboard grey boxes labeled P, Q and R; 3 pieces of string, a complete stand.  

With 3 grey boxes labeled P, Q and R. One of them contains a ferromagnetic material, another one contains a magnet  while the third contains a non magnetic material. Without opening them up, run tests on them and distinguish between them. No other material may be used to carry out the test!

Give a brief outline of your procedure, Observation/results, Calculations, Inference, Conclusion, highlighting any precautions you have taken to improve on the accuracy of your results.

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