Ms. smith challenged his students to create an electromagnet that will pick up more paper clips than anyone else in the class. Timmy is very excited and beginning to collect all of the necessary materials. He finds a D cell battery, and iron nail, and a large role of cooper wire. what could timmy do, using just these materials, to increase the strength of his electromagnet to pick up the maximum amount of paperclips?

freezing

deposition

condensation

explanation;

melting also called fusion is the process where solid becomes liquid, sublimation is the process where solid becomes gaseous without first changing to liquid, deposition involves change from gaseous to solid state, freezing involves change from liquid to solid, boiling or evaporation involves change of liquid to gaseous state, while condensation is the change from gaseous state to liquid state.

endothermic reactions involves absorption of heat from the surroundings or the environment while exothermic reactions involves loss of heat energy to the surroundings.

in this case, sublimation, evaporation and melting are endothermic reactions (gain energy from the environment) while, freezing, deposition and condensation are exothermic (loss of energy to the surroundings) reactions.

hey , the answer is c

c

explanation:

no. dot product   =0 when vecs at right angles