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Jenny wants to test the electrical conductivity of two substances dissolved in water. she is preparing the containers for the experiment. which factor is most important for her to control? a) volumes of the solutions b) appearance of the solutions c) temperatures of the solutions d) concentrations of the solutions
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Give the relation of resistance of wire with its length and thickness
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Which of the following is not associated with mechanical energy? a. motion b. position c. density d. shape
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