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What is force measured in?

The newton, named after the famous scientist Isaac Newton, is the standard unit of force. According to Newton's second law of physics, force is equal to mass multiplied by acceleration, or F=m*a. The mass of the object provides the kilogram component of the newton, while the acceleration of the object provides the meters over seconds squared. The mass and acceleration can be measured from either the object being impacted or the object applying the force.

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What causes tidal waves?

A bulge also develops on the side of Earth opposite of the moon. Since Earth makes a complete rotation every 24 hours, one part of Earth is under a bulge at any given time, experiencing high tide every 6 1/2 hours. Semidiurnal tides are two high tides and two low tides each day. A diurnal tide is one low tide and one high tide per day. During full moons and new moons, the sun, moon and Earth are lined up, and Earth experiences higher high tides and lower low tides. Called spring tides and neap tides, these occur twice a month.\nShore-based water-level gauges track tidal movements. These networ..

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What are some differences between milligrams and International Units?

International Units quantify the potency of biologically active substances, such as medication, vitamins, and vaccines. There is no single, set International Unit -- it is merely an agreed-upon standard for each individual substance. For example, an International Unit of vitamin A has a very different mass from an International Unit of vitamin C, because the two substances differ in their potency.\nMilligrams, on the other hand, measure mass. They are a subunit of the kilogram, the standard metric unit of mass. Milligrams do not differ from substance to substance, as International Units do: a ..

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What type of cells undergo mitosis?

Mitosis is the process of cell division. During this process, a cell copies its DNA and divides into two daughter cells. These daughter cells are identical to the original cell. Mitosis occurs in five different phases: prophase, metaphase, anaphase, telophase and interphase. The first two phases help the cell get ready to divide. Cell division begins in anaphase and ends in telophase. During interphase, the cell is resting and getting ready to undergo the process of mitosis sometime in the future.

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What is a contractile vacuole?

Vacuoles are usually organelles designed for the storage of wastes or water and other resources. The contractile vacuole, also known as the pulsing vacuole for its regular pumping action, is different. It stores its contents for only a few seconds before excreting them from the cell. They are crucial for the organisms that possess them, as without them the cells would expand with water, possibly even exploding.\nWhile contractile vacuoles occur mainly in single-celled freshwater species, they do occur in a few marine and terrestrial organisms. They also occur in the early stages of some fungi,..

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What are some trees native to Illinois?

Southern Illinois contains many swamps and waterways where the state's largest and oldest baldcypress trees are located. The state's hardwood forests are made up of trees that include the overcup oak, pin oak, sweetgum and cherrybark oak. Other trees native to the state's wide range of habitats and ecosystems include the American beech, American elm, sycamore, tuliptree and pawpaw. Other native species include buckeyes, holly, spicebush, sugar maple, red oak and sweetgum.\nThe white oak tree grows throughout every one of Illinois's 102 counties, although Putnam County holds..

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Are orchids poisonous?

Many common household plants are actually poisonous to people and pets, so it is important for anyone considering adding houseplants to a residence to note which plants are safe and which are not. Poisonous plants include, but are not limited to, azaleas, daffodils, English ivy and even the popular holiday favorite, mistletoe.

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How are wavelength and frequency related?

Different types of electromagnetic radiation have different wavelengths and frequencies. For example, gamma waves have a high frequency and a low wavelength, whereas radio waves have a low frequency and a high wavelength. Visible light falls near the middle of the electromagnetic spectrum, meaning most types of electromagnetic radiation have either a shorter or longer wavelength, as well as a lower or higher frequency.\nTogether, the frequency and wavelength of electromagnetic waves form oscillations as they travel. The shape of the oscillations is dependent on the type of electromagnetic radi..

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How do you use a night star chart?

A final orientation shift may be necessary since the time of the night also matters. Star charts indicate the representative time, so if you are not at the given time, you need to rotate the chart slightly to match what you see above. With the chart oriented, you can now match it with the night sky. Look for star patterns and star sizes.\nMost star charts indicate the brightness of stars by the size of the circles. Brighter stars are indicated with bigger circles than the dimmer ones. Look at patterns of bright stars in the sky, and try to match them with the patterns of big circles on the sta..

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What is an upper GI?

The esophagus is the tube that carries food from the mouth to the stomach. It is also referred to as the gullet or food pipe. The stomach churns food with enzymes and acidic gastric juice before being conveyed to the upper portion of the small intestine, also known as the duodenum. In the duodenum, food is mixed with bile and digestive juices secreted by the pancreas. The duodenum marks the starting point of absorption of nutrients,

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