Which statement describes a property of magnets?
1)magnets repel objects that are made of iron.
2)magnets attract sheets of paper.
3)magnets attract or repel iron nails.
4)magnets attract or repel other magnets.

Ascrew incorporates which other simple machine? lever wheel and axle inclined plane pulley

Which additional product balances the reaction h2so4 + 2naoh → na2so4 + 2h2o 2oh h2o2 h3o

Four point charges each having charge q are located at the corners of a square having sides of length a. find symbolic expressions for the following. (a) the total electric potential at the center of the square due to the four charges (use any variable or symbol stated above along with the following as necessary: ke.) vtotal= (b) the work required to bring a fifth charge p from infinity to the center of the square (use any variable or symbol stated above along with the following as necessary: w=