4 A 0 2 m electric water heater uses 4 KW Assuming no heat loss, how many hours would it take to heat the water in this tank from 28 to 80 (specific heat capacity of water c 4186 J kg K, density of water 1000 kg m Hint find the mass from the density formula p ) 4 A 0 2 m electric water heater uses...

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4. A 0.2 m electric water heater uses 4 KW. Assuming no heat loss, how many hours would it take to heat the

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