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Sahay Sir > Question Answers > Cengage JEE Mains Physics by B.M Sharma > Chapter 13 - Thermal Expansion, Calorimetry and Transmission of Heat > An iron rocket fragment initially at -100 C enters the earth’s atmosphere almost horizontally and quickly fuses completely in atmospheric friction. Specific heat of iron is 0.11 kcal/kg C its melting point is 1535 C and the latent heat of fusion is 3 kcals//kg. The minimum velocity with which the fragment must have entered the atmosphere is

An iron rocket fragment initially at -100 C enters the earth’s atmosphere almost horizontally and quickly fuses completely in atmospheric friction. Specific heat of iron is 0.11 kcal/kg C its melting point is 1535 C and the latent heat of fusion is 3 kcals//kg. The minimum velocity with which the fragment must have entered the atmosphere is

The rates of cooling of two different liquids put in exactly similar calorimeters and kept in identical surroundings are the same if