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What is Krichhoff's loop rule?

Mathematically, Kirchhoff's rule is represented as stating that the sum of all voltages in the loop is equal to zero. Because his rule is a simplification of Faraday's law of induction, the loop rule only holds under the assumption that there is no fluctuating magnetic field interacting with the circuit, when the circuit is under DC conditions, and with AC circuits at lower frequencies where the wavelengths are very high.\nIf magnetic fields are present, voltages will be induced to the circuit that are not from a battery or capacitor and the rule will not hold. In high-frequency AC ..

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How many satellites does Neptune have?

Neptune takes it name from the Roman sea god, and its moons take their names from some of the lesser gods from the sea, as well as nymphs in the Greek pantheon. In addition to Triton, the other 12 moons are Nereid, Naiad, Despina, Thalassa, Larissa, Galatea, Proteus, Sao, Neso, Laomedeia, Psamanthe and Halimede. Scientists did not discover Proteus or five of the other moons until the fly-by from Voyager 2. The most recently discovered moons came to light in 2002 and 2003, thanks to improvements in telescope technology as stated by NASA.

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What happens to alleles during meiosis?

A human being receives one allele from each parent. Alleles correspond to different traits, such as left-handedness or blue eyes. During the process of meiosis, chromosomes line up in pairs, or alleles, and then wrap themselves around each other randomly. This event causes a diversification in traits, which causes each set of chromosome pairs to be uniquely ordered when replicated. This process is known as crossing over, and at the end of it, alleles are first separated and then paired anew to form gametes, which are male or female sex cells. When the two new alleles that come together are the..

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How do cells control osmosis?

Osmosis is a type of diffusion where water passes from an area of high concentration to one of lower concentration within the cell through a semi-permeable membrane. Osmosis may be described as the diffusion of water from an area of low solute concentration to one of high solute concentration.Water will move through the membrane if an osmotic gradient is present. The osmotic gradient is the difference between the solute concentrations on either side of the semi-permeable membrane. Solutes exist in two states:Hypertonic: higher concentrationHypotonic: lower concentrationIn hypertonic states, th..

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How do volcanoes work?

When lava is underground, it is magma, notes About.com. Magma is from the Earth's mantle and most magma that becomes lava comes from the first 100 kilometers of the mantle. Adding water or releasing pressure creates enough heat to melt rock.\nVolcanoes form in subduction zones and continental rifts. Because magma is less dense than solid rock, it eventually works its way to the Earth's surface. While some volcanoes form by spewing ash and rocks from their central vents, others form in different ways. Smaller flows tend to form cinder cones, while larger ones build lava domes. Shield ..

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Are there coliform bacteria in well water?

People with wells should have their water tested on a regular basis to see if it is safe for use. In New York, the recommendation is that wells be tested at least annually, according to the New York Department of Health. If water is found to be contaminated with coliform bacteria, then the well should be inspected for signs of defects. Some well problems that can cause water contamination are well caps or casings that are damaged in some way. Once the well is fixed, the water should be retested.Coliform bacteria can be found in the fecal matter of animals and humans. It is also present in soil..

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Why do plants need soil?

Plants typically develop by acquiring nutrients from the soil. Their capability to absorb nutrients depends on the soil’s nature. The factors that affect the amount of nutrients available to plants are soil texture and acidity.\nSoil texture refers to the amount of organic matter, sand, silt and clay the soil contains, and it affects the soil’s retention of water and nutrients. Compared to sandy soils, clays and organic soils can keep a higher amount of water and nutrients. The best type of soil consists of equal parts of organic matter, sand, silt and clay.\nSoil acidity, or soil pH, meas..

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What is an example of a heterotroph?

All animals, including humans, are classified as heterotrophs because they consume other animals, plants or both in order to obtain the organic substances needed to sustain life. Fungi and some species of bacteria are also heterotrophs. Herbivores are considered the primary consumers in the food chain because they obtain their food directly from the autotrophs of the plant world. Heterotrophs represent about 95 percent of all living organisms.

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What is the history of cloning?

In the 50's, there were many attempts to clone frogs, and while the animals were cloned, they never made it past the tadpole stage and weren't deemed successful. In the mid 80's to early 90's, many embryos were cloned, such as rabbits, mice and sheep, and developed many cells but never grew to full animals. In 1995, two sheep, Morgan and Megan, were cloned from cell cultures. The first animal cloned from an adult cell was Dolly the sheep. After Dolly, in the late 90's and early 2000's there were many different kinds of animals cloned such as a mouse, a rhesus monk..

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How do you find help for stoichiometry?

Stoichiometry is a way of determining the ratio of reactants to products in a chemical reaction. It has been described as math that explains chemistry. It is based on the law of conservation, which holds that reactant mass is equal to product mass. If the amount of reactants is known, the amount of products can also be determined, and vice versa.\nStoicheion in Greek refers to an element, and metron refers to a measure. Stoichiometry is translated as the measure of elements. Understanding the relationship between reactants and products is important in stoichiometry. This requires an understand..

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