Question

A 30-L electrical radiator containing heating
oil is placed in a 50-m room. Both the room
and the oil in the radiator are initially at 10°C.
The radiator with a rating of 1.8 kW is now
turned on. At the same time, heat is lost from
the room at an average rate of 0.35kJ/s. After
some time, the average temperature is
measured to be 20°C for the air in the room,
and 50°C for the oil in the radiator. Taking the
density and the specific heat of the oil to be
950 kg/m and 2.2 kJ/kg°C, respectively,
determine how long the heater is kept on.
Assume the room is well-sealed so that there
are no air leaks.
​

Answer 1

Answer:

Left 383

Explanation:

This the correct answer Mark me as brainlist plss