Water is boiled at sea level in a coffee maker equipped with a $30-cm$ long $0\mathrm{.}4-cm-$

diameter immersion$-$type electric heating element made of mechanically polished

stainless steel. The coffee maker initially contains $1L$ of water at $14C.$ Once boiling

starts, it is observed that half of the water in the coffee maker evaporates in $32$min.

Determine the power rating of the electric heating element immersed in water and the

surface temperature of the heating element. Also determine how long it will take for

this heater to raise the temperature of $1L$ of cold water from $14C$ to the boiling

temperature.

please give me the correct answer

roy