Question

An electric heater 1kw 240v is used to raise the temperature of a 5kg copper block from 15 degrees to 33 degrees .if the specific heat capacity of copper is 400kg per kelvin and assuming no heat is lost in the surrounding ,calculate the time taken

Answer 1

Q=MC(dT)

m= 5kg

c= 400

dt= 33-15 = 18 = 291k

Step-by-step explanation:

you put in and get q= 582000

now heat = power/time

58200=1000/time

theres time