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A 1.5 kW water heater is used to heat 25...

A 1.5 kW water heater is used to heat 25 kg of water from `20^(@)C` to `40^(@)C` . Find the time taken assuming there are no losses. `C_(("water")) =4200 J kg^(-1)K^(-1)`

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To find the time taken by the water heater to heat 25 kg of water from 20°C to 40°C, we can follow these steps: ### Step 1: Calculate the heat required to raise the temperature of the water. The formula to calculate the heat (Q) required to raise the temperature of a substance is given by: \[ Q = m \cdot C \cdot \Delta T ...
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