How could the strength of an electromagnet be increased? by reducing the length of the core (nail) of the electromagnet

by using the rubber material as the core for the electromagnet

by decreasing the amount batteries used for the electromagnet

by increasing the number of coils in the wires of the electromagnet.

For each of the following compounds, write the formula then predict whether it would be a strong, weak, or non-electrolyte when placed in di water. for the ionic compounds only, put (s) or (aq) after the forrmula formula strong, weak or non electrolyte? a calcium hydroxide b. silver carbonate c. lead(ii) sulfate d. phosphorus trifluoride e. sodium phosphide f barium sulfate g. strontium acetate h. zinc nitrate

What energy is it when you flip on a switch on a lamp

Which process transfers heat from inside earth to its surface? convection currents in mantle pulling away of tectonic plates drawing in of tectonic plates convection currents in crust