What will be the final temperature of the copper
7.51 kilojoules of heat is added to a 22.8 g piece of copper, intially at 51 degrees celsius. What will be the final temperature of the copper (in degrees celsius)? (specific heat of copper = 0.385 J/g C)
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Four point charges have the same magnitude of 1.9 x 10-12 C and are fixed to the corners of a square that is 6.4 cm on a side. Three of the charges are positive and one is negative. Determine the magnitude of the net electric field that exists at
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