Question

What is heat explain with examples

Answer 1

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Most of us use the word 'heat' to mean something that feels warm, but science defines heat as the flow of energy from a warm object to a cooler object. ... Heat energy is the result of the movement of tiny particles called atoms, molecules or ions in solids, liquids and gases.

Heat is the flow of energy from a high temperature location to a low temperature location. This flow of energy is always associated with changes in the system and the surroundings. There can be changes in the temperature, changes in the state of matter and changes that result from the doing of work.

The biggest example of heat energy in our solar system is the sun itself. The sun radiates heat to warm us up on the planet earth. When the burner of a stovetop is very hot, it is a source of heat energy. ... Automobile fuels such as gasoline are sources of heat energy, as is the hot engine of a racecar or a school bus.

Answer 2

Answer:

When two bodies are in thermal contact with each other, there is a transfer of energy from the body at hugher temperature to the body at lower temperature. The energy in transfer is called the heat Also when two parts of a body are at different temperatures, there is a transter of energy from the part at higher temperature to the other part. The SI unit of heat is the joule.

[Note: Count Rumford Benjamin Thonpson (1753-1814) Anglo-American adventurer, social reformer, inventor and physicist, measured the relation between work and heat. When he visited Arsenal in Muich, he found that tremendous amount ot heat was produced in a short time when a brass cannon was being bored. He found that even with a blunt borer a lot of heat can be produced from a piece ot metal. At that time it was thought that heat consists of fluid called caloric. Rumford's experiments showed that caloric did not exist and heat is the motion of the particles of a body. He measured the relation beween work done and corresponding heat produce. The result was not acurate, but important in development of thermodynamics ]