Question

plzzzzzz , give me answer of this questions​​

Answer 1

Answer:

(3) The presence of a hot object can be felt without any contact because according to law of thermodynamics, heat transfers from higher temperature to lower temperature until the equilibrium is reached, thus you can feel the presence of hot body without contact.

(4) Actually conduction takes place in fluids too. It is caused by collisions and diffusion of molecules when they randomly move. Kinetic energy of particles is being transfered. What's even more if fluid is macroscopically stationary then heat transfer is only by conduction (excluding radiation).

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Answer 2

2. THE REASON FOR THIS IS HEAT US TRANSFERRED BY RADIATION SO THAT WE CAN FEEL HOTNESS WITHOUT TOUCHING IT.

3.CODUCTION PROCESS IS NOT USEFULL IN FLUIDS DUE TO THEIR INTERMOLECULAR ARRANGEMENTS WHICH ARE LOOSELY PACKED.

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