Enter interactions (Work and Heat), Thermodynamics

# Enter interactions (Work and Heat), Thermodynamics - Topper Handwritten Notes & Videos for GATE ME - Mechanical Engineering

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## FAQs on Enter interactions (Work and Heat), Thermodynamics - Topper Handwritten Notes & Videos for GATE ME - Mechanical Engineering

 1. What is the difference between work and heat in thermodynamics?
Ans. In thermodynamics, work and heat are both forms of energy transfer, but they differ in how they are transferred. Work is the energy transferred to or from a system by a force acting on it, causing a displacement. Heat, on the other hand, is the energy transferred between two objects or systems due to a temperature difference. Work is a mechanical form of energy transfer, while heat is a non-mechanical form.
 2. How is work calculated in thermodynamics?
Ans. The work done on or by a system in thermodynamics can be calculated using the equation: work = force × displacement × cos(θ), where force is the magnitude of the force acting on the system, displacement is the distance over which the force is applied, and θ is the angle between the force and the displacement vectors. This equation accounts for both the magnitude and direction of the force.
 3. What is the relationship between work and energy in thermodynamics?
Ans. In thermodynamics, work is directly related to energy. Work is the transfer of energy from one system to another, or from a system to its surroundings. The work done on a system increases its energy, while work done by a system decreases its energy. Therefore, work is a means of transferring energy between systems or converting energy from one form to another.
 4. Can heat be converted into work in thermodynamics?
Ans. Yes, according to the laws of thermodynamics, heat can be converted into work. This is known as the principle of heat engines. Heat engines operate by taking in heat energy from a high-temperature source, converting part of it into work, and releasing the remaining heat energy to a low-temperature sink. The efficiency of a heat engine is determined by the ratio of the work output to the heat input.
 5. How does the first law of thermodynamics relate to work and heat?
Ans. The first law of thermodynamics, also known as the law of conservation of energy, states that energy cannot be created or destroyed, only converted from one form to another. In the context of work and heat, the first law of thermodynamics relates to the conservation of energy during energy transfer. The total energy change of a system is equal to the sum of the work done on the system and the heat added to the system. This law provides a fundamental principle for understanding energy transfer and transformation in thermodynamic processes.

## Topper Handwritten Notes & Videos for GATE ME

76 videos|193 docs

## Topper Handwritten Notes & Videos for GATE ME

76 videos|193 docs

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