promotion image of download ymail app

I need a good sciencefair QUESTION !!!!?

and not the volcano or which brand of popcorn pops the most kernals

1 Answer

  • 1 decade ago
    Favorite Answer

    how much power do you need to pick up one pound of nails with an electromagnet, variables could include, number of wraps of wire around the steel bar used as electromagnet, size of steel bar,voltage, amperage, size of wire used, an objective could be to find a way to pick up one pound using the least amount of power.

    • Commenter avatarLogin to reply the answers
Still have questions? Get your answers by asking now.