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What are prime mover muscles?

Muscles are defined within four groups: agonist, antagonist, synergist and fixator. Prime movers are the agonist muscles, and they are assisted by the synergistic muscles. The antagonistic muscles are the muscles that oppose the primer mover by slowing it down. The fixator muscles assist the movement of the other three groups by holding the bones associated with the muscle groups.\nThere are many muscles that serve as prime movers depending on the location and type of movement. It is also common for muscles to assume multiple roles, including the prime mover. Take the example of the arm moveme..

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Who first discovered Venus?

Ancient Greek and Roman civilizations identified the planet and named it Venus after the goddess of love because it was brightest planet visible to them in the night sky. Ancient Mayans also independently observed Venus and included its movement in calculations for the Mayan calendar. In modern times, NASA was the first organization to send a spacecraft to Venus to better obtain surface calculations for the planet.

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What is gas liquid chromatography?

It is important for the carrier gas to be inert chemically, and gases that are frequently used include helium, nitrogen, carbon dioxide and argon; the specific choice generally depends on the type of detector in use.\nThe sample should enter the column as a vapor "plug," as a slower injection of larger samples weakens resolution and broadens the band. Most commonly, a microsyringe injects sample into a vaporizer port through a rubber septum at the column head.\nTo create precise outcomes, it is important to control temperatures within the column within tenths of a degree, but the optimal tempe..

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How do you measure a window for curtains?

Curtain width should be one and a half to three times the window width in order to correctly fill out the window. Less fabric gives the curtains a fitted style, while using more fabric will lend them a more plush style. The length of the curtain is a matter of personal preference. Common curtain lengths include measuring to the window sill, roughly six inches beneath the sill, and to the floor. Measure sill and floor lengths at several points, and use the lowest measurement in order to account for any unevenness, advises home furnishing retailer Dunelm.\nWhen using an outside curtain mount the..

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What is an example of Gay-Lussac's Law in everyday life?

All gases have different properties that can be observed via the senses. These properties include temperature, mass, volume and the pressure contained within the gas. Scientists have discovered that all of these properties within a gas are related to one another, and it is these properties that determine the gas' state.Charles and Gay-Lussac were two French scientists who first discovered, and then investigated, the relationship between temperature and volume in gases. The temperature and volume of a gas are always found at constant numbers of both moles and pressure. This rule is now cal..

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What is an example of kinetic energy?

The three types of kinetic energy are vibrational motion, translational motion and rotational motion. A flywheel is an example of rotational kinetic energy and a car moving in a straight line down a road is an example of translational kinetic energy. Some examples of vibrational kinetic energy are a vibrating cell phone, tuning forks and a bobblehead doll. These objects oscillate back and forth.

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What is the reproductive part of a plant called?

The flower of a plant contains petals, sepals, carpels and stamens. A carpel, part of the female reproductive organs, contains an ovary to produce ovules and a stigma to receive pollen. Stamens are the male reproductive organs, which contain anthers that produce pollen. Bees and other flying creatures aid in the process of pollination by spreading pollen around, dropping it on the stigmas of flowers. When pollen lands on the stigma, it burrows down to the ovary and fertilizes an ovum in the ovule. This results in creation of a seed.

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What is a mechanical mixture?

While mechanical mixtures may be attracted to each other, there is no permanent gain or loss of electrons; they do not form different molecules.\nOne example of a mechanical mixture is iron filings in flour. No matter how thoroughly they are mixed, the iron filings can always be separated from the flour using a magnet. Water with microscopic particles in it is a mechanical mixture, as these particles can be removed through filtration. Oil floating on water is a mechanical mixture because oil and water do not combine. Even blood can be separated into its components, as red cells are heavier tha..

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How many orbitals are in each sublevel?

The periodic table of elements contains seven rows; therefore, elements can have up to seven energy levels, depending on how many electrons the element possess. Electrons travel around the atom in orbitals. Each orbital houses a maximum of two electrons.\nWith each subsequent energy level, another sublevel is added. Energy level one contains only one sublevel, the s with its one orbital. Energy level 2 contains s and p sublevels, so this energy level has a total of four orbitals. Energy level 3 has s, p and d sublevels; therefore, this energy level has a total of nine orbitals.

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How many centimeters are in 8 inches?

The system used in the United States is different from that used in many other places and in the scientific world. Converting within the system and to the metric system often involves working with irregular numbers. The metric system is based on tens, so conversions within the metric system are easy, often just requiring moving a decimal point. For instance, one meter is equivalent to 10 decimeters, 100 centimeters and 1000 millimeters.

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