A charge of -4.00 nc and a charge of -6.10 nc are separated, Ask an Expert

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Q. A hot iron horseshoe (mass=0.40 kg), just forged is dropped into 1.35L of water in a 0.30 kg iron pot initially at 20degree celsius. If the final equilibrium temperature is 25 degree cesius, estimate the initial temperature of hot horseshoe.

Q. A charge of -4.00 nC and a charge of -6.10 nC are separated by the distance of 60 cm. Find out the position at which a third charge of +7.90 nC can be placed so that net electrostatic force on it is zero.

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