What are the applications of the first law of thermodynamics?
The first law of thermodynamics thinks big: it deals with the total amount of energy in the universe, and in particular, it states that this total amount does not change. Put another way, the First Law of Thermodynamics states that energy cannot be created or destroyed. It can only be change form or be transferred from one object to another.This law may seem kind of abstract, but if we start to look at examples, we’ll find that transfers and transformations of energy take place around us all the time. For example:Light bulbs transform electrical energy into light energy (radiant energy).One pool ball hits another, transferring kinetic energy and making the second ball move.Plants convert the energy of sunlight (radiant energy) into chemical energy stored in organic molecules.You are transforming chemical energy from your last snack into kinetic energy as you walk, breathe, and move your finger to scroll up and down this page.Importantly, none of these transfers is completely efficient. Instead, in each scenario, some of the starting energy is released as thermal energy. When it's moving from one object to another, thermal energy is called by the more familiar name of heat. It's obvious that glowing light bulbs generate heat in addition to light, but moving pool balls do too (thanks to friction), as do the inefficient chemical energy transfers of plant and animal metabolism.
Explain how the first and second laws of thermodynamics apply to ecosystems?
First Law of Thermodynamics states that during any biological, physical, or chemical process, energy cannot be created or destroyed. Second Law states that energy quality becomes less reusable or produces less work with every use. Most energy is lost as metabolic heat at each trophic level. http://www.holon.se/folke/kurs/Distans/E... This is the basis of studying the organism, in its habitat, as part of an energy web. First autotrophs capture solar EM energy then change this to chemical energy to begin the energy path through the ecosystem's trophic levels. There is a continual exchange of energy between organisms both as consumed mass and as the flow of metabolic heat. Further this law is used in the study of locomotion as organisms use food derived energy to support the cost of movement and a homeostatic thermoregulation. This explains why endotherms expend more energy than ectotherms. 'The Flow of Energy in Ecosystems - Productivity, Food Chain, and Trophic Level' http://www.biologie.uni-hamburg.de/b-onl...
How do the first and second laws of thermodynamics apply to the desert's ecosystem?
Wow! I had to look in my old physics textbook to find out what the first and second laws of thermodynamics are. The first law states, "When heat energy is added to (or removed from) a system, an equal amount of some other form of energy appears (or disappears). If heat is added to a desert's ecosystem then wind energy (or some other form of energy) must be removed. The second law states, "There is no natural process the only result of which is to cool a heat reservoir and do external work". If a rainstorm (for example) cools a desert ecosystem then it cannot do any external work.
Please explain using the first law of thermodynamics?
Some fire extinguishers contain carbon dioxide stored under very high pressure.Use the first law of thermodynamics to explain why some carbon dioxide solidifies as 'dry Ice' when released from such a fire extinguisher
What are the limitations of 1st law of thermodynamics?
First Law of Thermodynamics explains that energy can neither be created nor destroyed but can be changed to other forms.The limitations of first law -It does not tells us about direction in which heat flows when they are in contactIt does not tell about the final temperature of two bodies when they are in direct contact.It does not tell about the entropy of system.
How does the Law of Thermodynamics apply to cellular respiration and photosynthesis.?
The laws apply to all systems that involve energy and energy transformations. Respiration and photosynthesis fall in this category. So in photosynthesis, the plant does not make energy but just transforms light energy into food energy (convervation law 1 ). During the process, not all of the energy is converted, since most of it is lost as heat (transformation law 2). To keep the system going, it needs a regular stream of energy (entropy, law 3). I hope you get the drift. Respiration also involves energy conversions .