Question

Calculate the power of the heater in W.​

Answer 1

240 watt heater

Step-by-step explanation:

Just look at only the L side of the graph

the liquid is heated from - 20 to 40 = 60 C

so the J of heat required = .8kg * 1000 j /kg-C * 60 C = 48 000 J

this heat is put into the system over 200 seconds

48000 J / 200 seconds = 240 watts

Answer 2

to calculate power of heater in w

In general, the power required by electrical heating is calculated in watts. Wattage: Multiply the area in feet by 10. For a room 20 feet by 20 feet, we obtain 400 sq. ft., multiplied by 10 to give 4000 watts