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What is the mechanical advantage of a wedge?

A mechanical machine is a device that reduces the work load by multiplying the required force to carry out a particular task, thereby increasing the capacity to do work. The two types of mechanical machines are simple and compound. A simple machine consists of a single mechanical apparatus, while a compound machine is composed of two or more simple machines.The six basic types of simple machines include the wheel and axle, inclined plane, lever, screw, pulley and wedge. These devices provide a mechanical advantage, which refers to the factor by which a machine multiplies a force. The efficienc..

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Which organelle is responsible for photosynthesis?

Photosynthesis is a process in which plant cells capture light energy to catalyze reactions inside of their chloroplasts that form organic molecules. The compounds formed as a result of photosynthesis can be used by the plant for energy. The reactions involved in photosynthesis also utilize carbon dioxide in the atmosphere and convert it into water and oxygen, which is then released from the plant for other organisms to use in the environment.

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What is the biggest planet in the universe?

Scientists have speculated that there are other, larger gas giants besides TrES-4, with the biggest capable of achieving a size 15 times that of Jupiter. The TrES-4 system consists of the planet TrES-4, star TrES-4 A and star TrES-4 C. The presence of two stars in the system makes it a binary system.

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What is Italy's natural vegetation?

Italy's deciduous forests feature a variety of trees: conifers and evergreens dominate the mountainous landscapes, but forests contain beech, oak and chestnut trees too. Many plants and trees in Italy appear in other parts of the world as well, including North America and Europe. However, Italian species demonstrate unique physical and biological features, making them suited for surviving in Italy's climates. Evergreens and conifers grow broad, thick leaves. These leaves hold excess water, helping trees withstand hot, dry summers. While forests and large trees appear in Italy's ..

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What is the revolution period of Neptune?

Not only is Neptune's revolution period interesting, but there are also other facts that make Neptune worthy of study. It takes Neptune 19.1 Earth hours to make one rotation and its average temperature is around -373 degrees Fahrenheit. Its atmosphere is made of 74 percent hydrogen and 25 percent helium, with the other 1 percent being methane. Neptune, like Saturn, has rings, although Neptune's rings are more narrow than those found on Saturn.

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What is simplified string theory?

In addition to the four fundamental interactions, string theory utilizes five basic ideas to form its foundation. These include the ideas of strings and membranes of energy, quantum gravity, unification of forces, supersymmetry and extra dimensions. In particular, the strings and membranes claim has generated controversy, because it is purportedly impossible to produce supporting observational data.

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What is the Cenozoic Era?

This era of history sometimes is called the Age of Mammals because, with the extinction of the dinosaurs, mammals became the largest animals on land. The Cenozoic Era is comprised of three periods: the Paleogene, the Neogene and the Quaternary. During the Cenozoic Era, flowering plants thrived, and the animal kingdom became more diverse, witnessing the rise of insects, birds, reptiles and fish. At the end of the Pleistocene epoch and the beginning of the Holocene epoch of the Quaternary period, Earth saw the extinction of large mammals such as the woolly mammoth and the saber-toothed cat.

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What is the sulfide ion formula?

Sulfide can undergo recombination using hydrogen to produce SH- or HS-. Either formula is correct, and the resulting conjugate acid is bisulfide. In an aqueous (liquid) solution sulfide ions can be neutralized. If S2- is added to H20, it becomes SH- + OH-. When using two hydrogen atoms alone, hydrogen sulfide (H2S) is produced. Hydrogen sulfide has a molar mass of 34.08 g/mol. The sulfide ion is a salt with a strong base, and any sodium sulfide is extremely corrosive and damaging to the skin.

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What is 4pm EST in PST?

Pacific Standard Time (PST) is the latest time zone affecting the lower 48 states. Parts or all of five states lie in the Pacific time zone, of which Los Angeles is the biggest city. Central Standard Time is one hour behind Eastern Standard Time, and Mountain Standard Time is one hour behind Central time. These time zones also apply to time in Canada and Mexico.

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What happens to water molecules in the light-dependent reaction?

The electrons released from the water molecules in the light-reaction stage travel along the electron transport system within the chloroplast's thylakoid membranes and lose energy as they pass each transport point along the chain of proteins. The energy lost by the electrons is stored in the high-energy phosphate bonds in the plant cell's adenosine triphosphate, or ATP. Some of the protons released by the water molecules react with NADP, which is another energy-transport agent found within the plant cell. The reaction forms NADP-H, which then stores the energy lost by the protons.The..

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