the area of four walls of a room is 120 metre square if the length of the room is twice its breadth and the height is 4 metre find area of floor .
Answers
Answered by
0
Answer:
Power of water =2 kw=2000w
Mass of water =200kg
difference in temperature ΔT=70−10=60
o
C
Concept
energy required to heat the water = energy given by water in time t=pt
energy required to increase tempeature of water by 60
o
C,Q=msΔT
S= specific heat =4200J/kg
o
C
pt=msΔT
2000×t=200×4200×60
t=25200
or t=25.2×10
3
sec.
Step-by-step explanation:
Similar questions