Can someone pls tell me Three quality testable questions about factors that affect the strength of electric and magnetic forces that can be tested with an experiment.

            extra factors, you can use this if needed,

    4. The nature of the core material.

Explanation:

Factors that affect the strength of electromagnets are the strength of the current passing through the core, the number of turns of wire on the core and the shape and size of the core.

in 1783 cavendish was working with his hydrogen gas and found that when he burned it and condensed the vapor it was water. this was very significant since it disproved the greek theory of elements completely since water was not a simple substance but the product of two gases. it was lavoisier who hearing of the experiment gave cavendish's gas the name hydrogen ("water-producer") and added that hydrogen burned by combining with oxygen and that water was a hydrogen-oxygen combination.

explanation:

i belive it is water