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Physics Teachers with more than 15 years of teaching Physics to students up to Plus Two

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  1. explanation for hair rising- when we place our hands on vandegraff the charges flows from van de graff to our body( as we are conductors) now this charges spread to all parts including our hair, now all our hair strands will see their neighbours to be possesing a similar charge as a result they experince repulsion, hence to minimise the repulsion, they rise up and stand.