Internal energy

II. Energy balance model The methodology adopted has been used to predict the heating and cooling requirements of different buildings. Energy needs, expressed in Kilowatt-hour (kWh) are given commonly by equation 1: (01) In the heating season, equation 1 is simplified as follows: (02) In the cooling season, equation 1 is transformed into the following form: (03) During inter-seasons periods, if the heat generated by energy sources (lights, occupants and their activities) is higher than the…

The ectothermal approach to life enables animals to life in habitats that would be difficult or nearly impossible for an endotherm to live. The low energy requirement of ectotherms is the reason for this. They do not require energy to maintain the higher body temperatures that endotherms do. As a result of this, they have more tolerant tissues and can afford to eat less. Endotherms exhibit highly specialized tissues adapted to a certain…

These wings give males a selective advantage; they are able to attract female mates. Similar to migrating birds, the monarch butterflies use the clear benefit of updrafts of warm air, called “thermals” and glide as they migrate, to preserve the energy required for flapping their wings throughout the voyage. Studies show that monarch butterflies that migrate for long distances have evolved significantly bigger and longer wings than their cousins. These long wings have a narrow tip, thereby…

The storage modulus, (E՛) is proportional to the energy stored per cycle, the loss modulus; (E″) is proportional to the lost or dissipated energy per cycle. The storage modulus characterizes the elastic behavior of the material, and the loss modulus characterizes the viscous behavior of the material. The ratio of energy dissipated to energy stored is the tangent of the phase angle, δ, called tanδ, which is given by tan⁡δ=(E^" (ω))/(E^' (ω)) In…

requires energy. Human body constantly undergoes pathways and chemical reactions to maintain life. All reactions belong to metabolism, featuring catabolic reactions: break down of molecules into simple end products, or anabolic reactions: conversions of small precursor molecules into more complex ones. These pathways also feature Gibb’s free energy(∆G), which refers to the energy available for the reaction. If ∆G is positive, that means the reaction is endergonic and has produced energy. If…

Definition: The first law of thermodynamics states that the total energy of the system is constant and that energy can neither be created nor destroyed and can only transform from one form to another. This means that we can't create noting from something, and we can't create something from nothing. Energy exists and cannot become nonexistent and nonexistent energy cannot become exist. The first law makes use of the key concepts of internal energy, heat, and system work. It is used extensively in…

when it is generated by the metabolic process which takes place in the body. Even though energy is released during chemical…

recycling cans means that new aluminum cans will have to be made, and to make new aluminum cans people have to dig into the earth’s crust which wastes a lot of energy and emits more greenhouse gases which helps in global warming. Recycling an aluminum can saves enough energy to power a television set for 3 hours. This is a huge amount of energy preserved. This shows that what we are doing is important because…

determines the direction of heat energy flow when objects are put into contact with each other is known…

TAQ 1 Explain the term Homeostasis. The term homeostasis is derived from two Greek words; homios meaning ‘the same’ and stasis meaning ‘steady’. It refers to the processes by which the body and internal cells seek to constantly maintain an internal state of balance and equilibrium even when faced with external environmental changes. This is achieved through either positive or negative feedback loop controls associated mainly with the endocrine and nervous systems. Principal homeostatic…