Lecture Note
Heat
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University
University of Cambridge Course
0625 IGCSE | PhysicsPages
1
Academic year
2023
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drake Austin clay
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0
p {margin: 0; padding: 0;} No. Date Physics "HEAT" Flows From 9 (Hottery higher temperature body to alower Heat is FORM energy Called thermal energy Which Contact tempeRature body (Colder) When they placed In Heat or thermal energy of a body Is the Sum of kinetic energies of all its constituent Particles. The SI Unit of heat energy is joute (1) The pratical Unit of heat energy IS calore. I cal = 9.18 J I calone 1sthe quantity of heat required to raise the temperature. of 19 of Water bg 1°C (from 14.5°C to 15.5°C) Mechanical energy or Work (w) can be Converted into heat (a) by W= JQ where J= Joule' Mechanical equivalent of heat. J.Is Conversion Factor ( of a physical quantity) and its Value 4.186 1/cal.
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