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How does a spring stretch?

The extension of the spring depends on the magnitude of the force employed to pull the spring. The quantitative relationship between the applied force and the corresponding stretch can be established by a linear regression analysis. The quantitative relationship between the force and the stretch is expressed as F = -k * L. The force exerted on the spring is “F,” while the amount of stretch is referred as “L” and the spring constant is represented as “k," which is dependent on the spring used in the experiment. If the spring has less elasticity, the amount of force must be higher to b..

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What causes a spiral fracture?

Fractures occur when the physical force exerted on bones is greater than their strength. According to WebMD.com, fractures are very common for patients of all ages. Those at particular risk for fractures include the elderly and those who suffer from certain disorders and other diseases that may weaken the structure of their bones. Accidental spiral fractures of the tibia bone in the lower leg, often referred to as "torsion fractures'" or "toddler's fractures," are particularly common in preschool-age children who fall a short distance and land on an extended leg.\nAccording to the Am..

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How many arteries lead to the heart?

The right coronary artery transports oxygenated blood to the right side of the cardiac muscle, which includes the right ventricle, right atrium, rear of the septum and base of both ventricles. This main artery is divided into two smaller branches: posterior descending and right marginal.The left coronary artery provides blood to the left side of the heart, including the left ventricle, left atrium and the anterior portion of the septum. It also splits into two smaller branches: left anterior descending and circumflex, as explained by Cleveland Clinic.

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What is an energy-producing organelle?

Mitochondria are made up of two membranes. The outer layer allows small molecules, such as nutrients, ATP, oxygen and carbon dioxide, to pass through to the center. The inner membrane consists of folds called cristae. It is less permeable than the outer membrane, allowing only oxygen, carbon dioxide and water through. Mitochondria make energy in the form of adenosine triphosphate, or ATP, in a process called cellular respiration. ATP supports aerobic respiration, which uses oxygen to power cells.

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How much bacteria is in the human mouth?

Daily brushing, flossing and rinsing with an antiseptic mouthwash help reduce the types of germs that cause gum disease, notes WebMD. Individuals should avoid sharing personal items such as toothbrushes, drinking glasses and lipsticks to prevent transmitting germs, infections and viruses. One way people can avoid bacterial growth on their toothbrushes is to let them air dry after rinsing them with running water. People should replace their toothbrushes with new ones every three to four months or after recovering from illnesses.

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When is the sun at its highest point?

Information about a location's latitude, longitude and time zone are necessary to calculate solar noon. The axis and orbit of the Earth all account for the difference between clock noon and solar noon. Clock noon occurs after solar noon in the beginning of December, and the two times get closer together as the calendar approaches the winter solstice on December 21. Clock noon occurs before solar noon by the end of January.

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What are examples of diatoms?

Diatoms are a type of algae with a very distinctive cell wall. The cell wall is made of silica, giving the diatom a glasslike structure that prevents damage to the organism. Diatoms thrive in moist environments, so they are often found in damp soil, tree bark and bodies of water.\nBecause diatoms produce their own food via photosynthesis, many species live within the first 200 meters of lakes, oceans and other bodies of water so they can harness energy from the sun. Some diatoms exist as single-celled organisms, while others form simple colonies or filaments.\nDiatoms reproduce via a process c..

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How do you convert kilowatts to amps?

For DC kilowatt to amp conversions, multiply 1,000 by the power in kilowatts and then divide by the volts to arrive at the amps. For single phase AC kilowatts, multiply the power in kilowatts times 1,000 then divide that number by the volts multiplied by the power factor. Finally, for three phase AC kilowatts with line to line voltage, multiply 1,000 times the kilowatts, and then divide that number by the square root of 3 multiplied by the power factor times the line-to-line RMS voltage.

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Why is AB negative blood so rare?

Additionally, people with AB negative blood are considered Rh negative. Children with this blood type must be born to parents who are both Rh negative, which is a recessive gene. Considering that less than 20 percent of the population has Rh negative blood, and even fewer are AB negative, a person with AB negative blood type is rare.

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What is the average weight of a man who is 5 foot 10 inches tall?

There are four categories that BMI ranges fall into. If a person's BMI is less than 18.5, he is considered underweight. For a 5-foot, 10-inch-tall man, that corresponds to 129 pounds. When someone's BMI is between 18.5 and 24.9, that is a healthy weight. BMI values between 25 and 29.9 are considered overweight and correspond to a range of 174 to 208 pounds in this example. For this same man, a body weight above 208 pounds corresponds to a BMI greater than 30, which is considered obese.

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