Renewable energy is obtained from renewable natural resources (replenished naturally in a span of human life cycle). They are also referred to as clean energy as they do not contribute to carbon emissions, which makes them non-polluting. These energy sources mainly cater to areas like-generation of electricity, transportation, electricity services in remote off-grid areas, and heating of air and water. Why Is Renewable Energy Important A) To combat climate change: Fossil fuels cause carbon-di-oxide emission which is leading to global warming....

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Vascular tissue is a specific type of tissue in plants that conduct water, minerals, and sugars to their different parts. In plants, they are xylem and phloem. Plants having a vascular system are called vascular plants. Location of Vascular Tissue Vascular tissue is found in all vegetative organs of a plant: the roots, the stems, and the leaves. Vascular Tissue in Plants Not all plants have vascular tissue. Plants such as algae and bryophytes such as mosses, liverworts, and hornworts get water and minerals from their environment by simple diffusion....

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Squirrels survive a fall because they have a low terminal velocity compared to other animals. The following equation gives the terminal velocity of an object falling through the air. A squirrel weighs 330 g, and the underside of its belly is approximately 500 cm 2 in area. The drag coefficient for the belly down position is 1. We have m = 330 g = 0.33 kg ρ air = 1.29 kg/m 3...

Capillary action is a phenomenon in which liquid flows through a narrow tube without the assistance of any force. It refers to the ascension of liquid through a capillary tube due to forces of adhesion and cohesion and, typically, against gravity. Capillary action occurs when the force of adhesion is greater than the force of cohesion. For instance, capillary action is observed when placing a thin straw into a cup of water....

Gamma decay (denoted by the Greek symbol γ) is a type of radioactive decay that occurs when an unstable atomic nucleus releases excess energy in the form of gamma rays. Gamma rays are a form of high-energy electromagnetic radiation, similar to X-rays but with even greater energy. They belong to the electromagnetic spectrum and are characterized by their very short wavelengths and high frequencies. Gamma radiation is unique because undergoing gamma decay does not alter the atom’s structure or composition....

The genetic code is a set of rules or instructions that dictate how the information stored in DNA (deoxyribonucleic acid) is translated into functional proteins within living cells. It is a triplet code, which means it operates in groups of three nucleotide bases, known as codons. Each codon corresponds to a specific amino acid or a termination signal for protein synthesis. How does a Cell Interpret the Genetic Code The journey of information transfer within the genetic code is a two-step process: transcription and translation....

Genetic drift, also known as allelic drift or the Wright effect, refers to the random change in the allele frequency of a particular gene in a population. It is one of the basic mechanisms of evolution with natural selection. Unlike the latter, it does not depend on an allele’s beneficial or harmful effects. It can majorly influence small populations where chance events have a more significant impact. Although random, genetic drift can have long-lasting effects on the genetic makeup of a population....

There are several kinds of wind blowing across the surface of the Earth, depending on the origin, destination, and distance traveled, among other factors. These are called prevailing or planetary winds. Global winds are one such type of wind. Global winds are winds that develop in belts distributed all around the world. Like local winds, the leading cause of global winds is unequal heating of the atmosphere, causing a difference in air pressure....

A heat engine is a device that converts heat to mechanical energy and extracts practical work through physical motion. It operates between a hot reservoir that provides heat to a working substance, which is then brought to a lower temperature by dumping the heat into a cold reservoir. The working substance has a finite heat capacity and is usually a liquid or a gas. An example of a heat engine is an automobile engine....

Magnetic energy is the energy associated with a magnetic field. Since electric currents generate a magnetic field, magnetic energy is due to electric charges in motion. Magnetic fields are generated by permanent magnets, electromagnets, and changing electric fields. Energy is stored in these magnetic materials to perform work and is different for different materials. Since it is stored energy, magnetic energy is a form of potential energy. Scottish mathematician and scientist James Clerk Maxwell are credited with having discovered magnetic energy during his pioneering work on electromagnetism in 1865....

A neutrino is a subatomic particle like an electron but has insignificant mass and no electrical charge. These are the lightest of all the subatomic particles that have mass. However, it is one of the most abundant particles found in nature. Sun emits vast neutrinos that pass through layers of the earth with little or no interaction. The solar neutrino flux produces about 5 x 106 neutrinos/cm2s. Neutrinos belong to the family of leptons that are not subject to the strong force....

book on a table is NOT an example of N3L!!!!!! It is an example of balanced forces on a object. The force pair for the book on the table is earth pulling the book down and the earth pulling the book up Also the normal force of the book on the table is balanced my the normal force of the table on the book!

What is Nucleolus The nucleolus (plural: nucleoli) is described as a large, round body located inside the matrix of the nucleus of a eukaryotic cell. It is membrane-less and is made up of RNA and proteins. The nucleolus is more prominently seen in an interphase nucleus. Nucleolus Eukaryotic cells, plant or animal, often contain a single nucleolus, though several are also possible. The exact number is fixed among the members of the same species....

What is Pyruvate Oxidation Pyruvate oxidation, also known as pyruvate decarboxylation or link reaction, is a connecting step of cellular respiration, linking glycolysis and the Krebs cycle. Here, pyruvate gets oxidized to acetyl-CoA under the influence of the enzyme complex pyruvate dehydrogenase. At the end of glycolysis, a single glucose molecule splits into two pyruvates (C 3 H 4 O 3 ). Due to this, the link reaction occurs twice for each glucose molecule yielding a total of 2 acetyl-CoA molecules....

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Great resources for my students.

Definition: What is Concave Mirror? A concave mirror is a curved mirror that forms a part of a sphere and designed in such a way that rays of light falling on its shiny surface converge upon reflection. Hence, it is also called a converging mirror. A concave mirror produces both real and virtual images, which can be upright or inverted. The size of the image can be bigger or smaller than the object....

thanks for sharing such a wonderful note am grateful for such. i want to know physics