A wire is connected to a 6 V battery. At 20o C , the current through a wire connected to the battery is 2.0 A but reduces to 1.7 A when the T of the wire is 100oC. What is the Temperature coefficient of resistivity of the wire

Suppose you increase your walking speed from 7 m/s to 13 m/s in a period of 2 s. what is your acceleration?

(a) calculate the number of electrons in a small, electrically neutral silver pin that has a mass of 10.0 g. silver has 47 electrons per atom, and its molar mass is 107.87 g/mol. (b) imagine adding electrons to the pin until the negative charge has the very large value 1.00 mc. how many electrons are added for every 109 electrons already present

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