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What is the symbol for resistance?

Resistance measurements in equations are used to determine current and voltage, the force that motivates the flow of electrons. Georg Simon Ohm first discovered that voltage, symbolized by the letter "E," is equal to current, symbolized by the letter "I," multiplied by resistance. This is known as Ohm's law, which can be expressed with the equation E = I x R. When two out of three of the variables in the equation are known, algebra can be used to solve the third variable.

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What happens if a cell undergoes mitosis but not cytokinesis?

Nuclear division among multicellular organisms is of two types: mitosis and meiosis. Mitosis, which is associated with repair and growth of the organism, is the process of producing two identical diploid daughter cells. Meiosis, meanwhile, is involved in generating four haploid sex cells called gametes that are used for sexual reproduction.Prior to mitotic cell division, a process called interphase occurs in the nucleus, where the genetic material contained within the deoxyribonucleic acid, or DNA, is replicated. After interphase, mitotic division follows, which is comprised of four major phas..

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What are L waves?

L waves are categorized as either Love waves or Rayleigh waves according to their motion. Love waves move side to side across the surface of the earth, while Rayleigh waves have a rotating circular motion.\nWaves that occur below the surface of the earth are called body waves. Primary body waves are the fastest waves and are able to pass through solids, liquids and gases. Secondary body waves move more slowly and can only travel through solids.

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How do skeletal muscles aid the circulatory system?

Skeletal muscles are the main driver of venous blood; simply breathing also contributes to this process. When a person inhales, the diaphragm moves downward, decreasing the pressure in the thorax and increasing pressure in the abdomen. This decrease in pressure draws in air from the trachea, but it also draws in blood from the body, which is compounded by the increased pressure in the abdomen forcing blood out.\nVeins can constrict, but they do not do this in a rhythmic fashion that sends blood back to the heart over time. Rather, veins constrict mostly to increase blood pressure. This becomes..

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Can you live without your spleen?

The spleen is an organ that plays a role in a person's overall immunity. The small organ affects the body's ability to fight off pathogenic bacteria and viruses by filtering the blood and removing any foreign antigens. If the spleen is removed, then a person's immunity may weaken making him more susceptible to infections like pneumonia.

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What are some examples of luminous objects?

Luminous objects are responsible for our vision, as the human eye only perceives light that is being reflected into it. In darkness, where no luminous objects are present, the eye cannot perceive its surroundings.\nIn order for luminous objects to emit light, there must be a power source. The sun and other stars produce light due to the fusion of hydrogen atoms, the light bulb emits light due to the electrical energy flowing through it and the lit candle uses energy released by burning the wick. Fluorescent materials store energy given by other luminous objects and release light in wavelengths..

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What is the range for a normal blood sugar level?

Blood sugar levels above 180 milligrams per deciliter are dangerously high and indicate the subject is hyperglycemic or pre-diabetic. Levels below 50 milligrams per deciliter are dangerously low, in which case the subject is hypoglycemic. Even after fasting, levels should never fall below 60 milligrams per deciliter since the liver in healthy adults converts stored fat and proteins to sugar to maintain the proper levels for the individual. When blood sugar levels are consistently high, glucose acts as a poison to certain organs, such as the pancreas which becomes permanently damaged. Other pro..

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How does rust form?

Rust is the common name given to the product of the corrosion that occurs in iron and its alloys. The rust that appears is typically a reddish color. In time, an iron mass will become entirely rust and disintegrate. To prevent rust from occurring, several rust-resistant alloys have been created, such as stainless steel. Other metals that do not rust are aluminum, zinc and titanium.

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What bones are separated by the sagittal suture?

As a child's brain and skull grow, the sutures provide space for expansion. This allows for even growth, resulting in a normal-shaped head. If sutures close too early, head growth can be asymmetrical.\nBy the age of 35, the sagittal suture is typically completely fused. When a skull is examined for anthropological or forensic reasons, the appearance of the sagittal suture is sometimes used to help identify the age of an individual.

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When in the best time to view fall foliage?

Peak foliage times proceed in a southeasterly direction, reaching central and upstate New York, Vermont, New Hampshire and Maine by the first and second weeks of October and reaching central and northern Massachusetts by this time. The middle of the second week of October usually sees the greatest portions of New England, New York, Pennsylvania and the Great Lakes regions at their peak. Foliage viewing usually ends with the peak viewing ending in the southeastern portions of the Northeast by the third week of October.\nThe timing, colors and intensity of the foliage vary from year to year and ..

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