Which of the following is a resistor?
fan
switch
battery

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How do you tell if someone actually cares about you? and just say they do?

What is an aquifer for science class

Two pans of a balance are 24.1 cm apart. the fulcrum of the balance has been shifted 1.33 cm away from the center by a dishonest shopkeeper. by what percentage is the true weight of the goods being marked up by the shopkeeper? assume the balance has negligible mass. answer in units of %.