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What is Starling's law of the heart?

The law of the heart has several names, including Starlings law, Frank-Starling mechanism and Maestrini heart’s law. The law and its research was inspired by the work of Maestrini four years before the law of heart was produced. Maestrini began his work in 1914, while Frank and Starling built their work upon his in 1918. Many people feel that Maestrini should have gotten more credit for the work he had put into the research those years before.

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What is the function of the L5-S1 disc?

The L5-S1 vertebral segment is also known as the lumbosacral joint, states Spine-Health. The L5-S1 vertebral segment makes up the base of the spine and consists of many interconnected parts. The L5-S1 disk is made up of two parts, a protective outer portion and gelatinous inner core. Herniation or degeneration of the L5-S1 disk can cause pain in the lower back and legs by exerting pressure or by exposing inflammatory proteins from the core to the L5 nerve root.

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What is a common description of a tornado?

The rotating column of air around a tornado funnel is called a vortex and can be up to 300 meters in width. Interior wind speeds in a tornado range from 40 miles per hour to 300 miles per hour. The width and speed of a tornado impact the severity of destruction left in its wake.

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What are some friction experiments?

An experiment to determine the friction between two sheets of paper is described by ABC. A simple set up involves pulling apart two sheets of paper to overcome the friction holding them together. Taking it a notch higher, two books of ordinary paper have their pages intertwined. While it’s easy to pull apart two sheets of paper, interleaved pages of two books are held together by more friction, and hence these are difficult to separate when pulled.\nAccording to Vernier, one can experience static friction by trying to push a heavy box that rests on the floor. Pushing such a box lightly invok..

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What are the properties of glycerin?

Glycerol is a diuretic and laxative, meaning regular intake of it can contribute to dehydration. That being said, the general consensus is that glycerol is safe for human consumption. In fact, most people have used glycerol in various household products including food, shaving cream, soaps, and hair products. Glycerol is also useful as an anti-freeze, although it's been replaced with ethylene glycol.

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What is the correct sequence of coal formation?

Most coal was formed about 300 million years ago. During this time, Earth was primarily covered by swamps. Dying plants and trees sank into these swamps. As the climate changed and swamps dried up, rivers and streams deposited sediment on top of these remains, creating large coal beds. Coal production continues in swampy areas of Earth, with a completion date millions of years in the future.

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What is the melting temperature of coconut oil?

Coconut oil is an edible oil extracted from the meat of mature coconuts that are harvested from the coconut palm. It is often used in cooking, especially frying, because of its high saturated fat content. It is often used in South Asian curries and by movie theaters to pop popcorn. In addition its uses in cooking, coconut oil is used as a moisturizer for dry skin and is used in hair products to help reduce protein loss.

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What are the ways in which you can donate your body to science?

Universities with medical programs, embalming schools and forensic anthropology programs accept cadavers for research or to train future surgeons. Body brokers assist the living in registering as future donors, including providing legal paperwork and handling the process when donors die, says CNN.\nBody Worlds accepts cadavers, which travel to Germany for plastination, which is the process of posing and hardening bodies in a different approach to teaching anatomy, notes its website. The Mutter Museum in Philadelphia occasionally accepts unusual body parts for display, according to the museum&a..

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What are the different types of pathogens?

Pathogens are defined as microscopic agents in nature that can easily cause a person harm, states Education Portal. People come in contact with pathogens each day, but their immune systems work hard at all times to remove pathogenic bacteria, viruses and fungi from their bodies.\nViruses are small, infectious agents that are able to replicate inside of a living host. Without a living host a virus is unable to divide, replicate and thrive, according to Education Portal. Once a virus enters the human body it inserts itself into a cell and utilizes the cell's organelles and cellular machiner..

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What is the terminal velocity of a bullet?

The terminal velocity of any given bullet can be determined with a simple physics equation: velocity equals the square root of twice the weight divided by product of the drag coefficient times gas density and frontal area. Aerodynamics of the bullet impact its terminal velocity as much as its mass and conditions of firing.

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