In today lecture, we are going to solve the numerical problems of chapter 9 (Transfer of heat) of 9th class physics. We provide most easy and authentic method to solve these problems. Hope you like it.
Other chapter's videos:
Chapter 8: (8.1 to 8.5): • Chapter 8 Numericals Solution | 8.1 t...
Chapter 8: (8.6 to 8.10): • Chapter 8 Numericals Solution | 8.6 t...
Chapter 7: (7.1 to 7.6): • Chapter 7 Numerical Solution | 7.1 to...
Chapter 7: (7.7 to 7.12): • Chapter 7 Numerical Solution | 7.7 to...
Chapter 6: (6.1 to 6.5): • Chapter 6- Numerical Solution اردو /...
Chapter 6: (6.6 to 6.10): • Chapter 6 Numericals Solution (6.6 to...
Chapter 5: (5.1 to 5.5): • Chapter 5- Numerical (5.1 to 5.5) Sol...
Chapter 5: (5.6 to 5.10): • Chapter 5- Numerical (5.6 to 5.10) So...
Chapter 4: (4.1 to 4.5): • Chapter 4- Numerical (4.1 to 4.5) Sol...
Chapter 4: (4.6 to 4.10): • Chapter 4- Numerical (4.6 to 4.10) So...
Chapter 3: (3.1 to 3.5): • Chapter 3- Numerical (3.1 to 3.5) Sol...
Chapter 3: (3.6 to 3.10): • Chapter 3- Numerical (3.6 to 3.10) So...
Chapter 2: (2.1 to 2.5): • Chapter 2- Numerical (2.1 to 2.5) Sol...
Chapter 2: (2.6 to 2.10): • Chapter 2- Numerical (2.6 to 2.10) So...
Chapter 1: (1.1 to 1.5): • Chapter 1- Numericals (1.1 to 1.5 ) S...
Chapter 1: (1.6 to 1.10): • Chapter 1 Numericals ( 1.6 to 1.10 ) ...
Numerical statements solve in this video:
9.1: The concrete roof of a house of thickness 20 cm has an area 200 m2. The temperature inside the house is 15 °C and outside is 35°C. Find the rate at which thermal energy will be conducted through the roof. The value of k for concrete is 0.65 Wm-1K-1.
9.2: How much heat is lost in an hour through a glass window measuring 2.0 m by 2.5 m when inside temperature is 25 °C and that of outside is 5°C, the thickness of glass is 0.8 cm and the value of k for glass is 0.8Wm-1K-1?
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