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The temperature of a body falls from 52^...

The temperature of a body falls from `52^(@)C` to `36^(@)C` in `10` minutes when placed in a surrounding of constant temperature `20^(@)C`. What will be the temperature of the body after another `10min`. (Use Newton's law of cooling)

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To solve the problem using Newton's Law of Cooling, we will follow these steps: ### Step 1: Understand the given data - Initial temperature of the body, \( T_1 = 52^\circ C \) - Final temperature after 10 minutes, \( T_2 = 36^\circ C \) - Surrounding temperature, \( T_s = 20^\circ C \) - Time interval, \( t = 10 \) minutes ...
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BANSAL-HEAT TRANSFER-Exercise
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  4. A composite cylinder is made of two materials having thermal conductiv...

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  5. A metal sphere with a black surface and radius 30 min, is cooled to -7...

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  6. A pan filled with hot food cools from 94^(@)C to 86^(@)C in 2 minutes ...

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  7. A body cools from 50^(@)C to 40^(@)C in 5 minutes. The surrounding tem...

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  8. One end of a 2.35m long and 2.0cm radius aluminium rod (K=235W.m^(-1)K...

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  9. The rate of emission of radiation of a black body at 273^(@)C is E, th...

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  13. If at temperature T, the emissive power and absorption power of a body...

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  16. The temperature of a body is increased by 50%. The amount of radiation...

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  17. Radius of a shere is R density is d and specific heat is s, Is is heat...

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  18. If a body at 27^(@)C emits 0.3 watt of heat then at 627^(@)C, it will ...

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  19. If the rate of emission of radiation by a body at temperature TK is E ...

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  20. A liquid takes 10 minutes to cool from 80^(@)C to 50^(@)C. The tempera...

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  21. A metallic sphere cools from 50^(@)C to 40^(@)C in 300 seconds. If the...

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