First Law of Thermodynamics

[Aishwarya Vadivel 2F]

Hi! Does anyone have any examples of the first law of thermodynamics in nature?

[206030797]

The laws of thermodynamics are important unifying principles of biology. These principles govern the chemical processes (metabolism) in all biological organisms. The First Law of Thermodynamics, also known as the law of conservation of energy, states that energy can neither be created nor destroyed. It may change from one form to another, but the energy in a closed system remains constant. All biological organisms require energy to survive. In a closed system, such as the universe, this energy is not consumed but transformed from one form to another. Cells, for example, perform a number of important processes. These processes require energy. In photosynthesis, the energy is supplied by the sun. Light energy is absorbed by cells in plant leaves and converted to chemical energy. The chemical energy is stored in the form of glucose, which is used to form complex carbohydrates necessary to build plant mass. The energy stored in glucose can also be released through cellular respiration. This process allows plant and animal organisms to access the energy stored in carbohydrates, lipids, and other macromolecules through the production of ATP. This energy is needed to perform cell functions such asDNA replication, mitosis, meiosis, cell movement.
hope this helps!!

[505823976]

100J of work is done on a system, internal energy increases by 74 J, how much energy is transferred as heat : delta U= q - w

rearrange equation and get q= delta U + w —> q= 74+ (-100) } = -26J heat lost in the system

here's a video with a great example and it gets deconstructed
https://youtu.be/O7HwhkYt6YU

[Caitlin Beale 3E]

Photosynthesis, can be used as an example of the first law of thermodyanmics in nature. During photosynthesis, plants convert light energy into chemical energy in the form of glucose. This energy is then used to fuel various metabolic processes in the plant.

[106029153]

An example of the first law of thermodynamics in real life is our own bodies! When we workout, we generate heat and heat leaves our body and is transferred into our surroundings. Even though the heat we give off may be barely noticeable, the energy is not created nor destroyed, but is simply transferred.

[eopeyany 3D]

An example of the first law of thermodynamics in nature could be when a piece of fruit falls from a tree branch. This relates to the first law of thermodynamics because the energy changes from potential energy to kinetic energy and no energy is created or destroyed.

[Isabella Vu 1J]

The First Law of Thermodynamics states that energy can be converted from one form to another, but ultimately cannot be created or destroyed. A specific real life example can be seen with eating food. With the change in internal energy of a system being equal to heat transfer between a system and its surroundings and the work interaction a system and its surroundings, one can see how the energy is conserved. The stored food energy can be seen through photosynthesis as plants gain a continuous exchange of a repeated reaction. The food is continued to be kept in the system as food is used to do work and heat is transferred with the processes.