Calculate the thickness of the slab of area 90 x 10-4 m2 through which 6 Joules of heat is flowing per second through the opposite faces maintained at a temperature difference of 20 K. The coefficient of thermal conductivity of the material of the slab is 0.04 Wm-1K-1.
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Calculate the thickness of the slab of area 90 x 10-4 m2 through which 6 Joules of heat is flowing per second through the opposite faces maintained at a temperature difference of 20 K. The coefficient of thermal conductivity of the material of the slab is 0.04 Wm-1K-1.
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Mr. Kapil was happy to buy a shirt on discount sale which was offering a 20% discount. The shopkeeper, Mr. Sahil, put the selling price of the shirt as Rs.1440. When Sahil's son wanted to know why his father was selling at a discount, he told him that even after the discount he was making a profit of 25%. He was convinced only when Sahil explained him the whole calculation. What do you think was (1) the marked price of the article. (ii) the cost price of the article. ( step by step answer)
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