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I need to prepare a working model for my physics project.. the model should convey the basic concepts of physics.. can u please suggest anything which i

can prepare.?
you can use piezo electric material and show the model of saving electricity of street lights which will b switched on even during day time..
if u like this idea or you need any help ..please ask me . it will b gr8t


you can use the two spring balances by which you can show about  newton's third law of motion.

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I agree with bheesm.show 3rd law of motion.
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