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Is motor oil flammable?

Flammability in regards to liquids is determined by its flash point, the lowest temperature at which it can release ignitable fumes into the air. Any volatile liquid with a flash point lower than 100 degrees Fahrenheit is considered flammable. Any volatile liquid with a flash point higher than 100 degrees Fahrenheit is considered combustible. Although a handful of motor oils designed for use with motorcycles are flammable, the flash point of most motor oils is at or above 400 degrees Fahrenheit, classifying them as combustible.

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What does gravitational potential energy depend on?

Work is defined as the change in energy on an object that occurs because of an applied force moving the object by a certain amount of distance. In gravitational potential energy, the applied force is the object's weight, given by the mass of the object and its gravitational acceleration, and the distance moved is given by the height.\nDoubling the height of the object doubles the amount of potential energy it carries, as the force has to do more work to move the object by a greater distance. Doubling the object's weight also doubles the potential energy, as there is a greater amount ..

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What are some interesting facts about zoology?

Zoology is the study of animals and how they interact with and within their ecosystems. Besides studying the physical characteristics of animals and the animal behaviors, zoologists and wildlife biologists also analyze the influence that humans have on wildlife and natural habitats. Depending on their position and their field of expertise, they have to work in all types of weather and in a variety of locations.

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How does a tidal barrage work?

Tides are predictable; hence, they are an ideal source of energy. Tides move in and out of rivers and estuaries in a cycle of about 12.4 hours, that is, two tides for every 24 hours and 50 minutes. Sluices and turbines are installed to generate electricity from the movement of tidal waves with two basic options for its design and operation. These are called the ebb generation and the two-way generation. In the ebb generation, sluices are opened to allow water to fill in the basin up to the full normal level and then it is closed during high tide. Having water level on both sides, turbines are ..

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What is the function of the large central vacuole in plant cells?

A membrane known as the tonoplast is used to enclose this large central vacuole. As the cell matures, this large central vacuole gradually develops as a result of fusion of smaller vacuoles that are derived from Golgi apparatus and the endoplasmic reticulum. The central vacuole has a number of roles in plant cells, some of which include storing of salts, nutrients, pigments, minerals, proteins, aiding the growth of the plant and playing a vital structural role for the plant. When the conditions are optimum, water fills the vacuoles to the point that they exert pressure against the walls of the..

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What are some causes of railroad derailments?

Another reason a railroad derailment may occur is that the responsible parties fail to remove obstructions at a railroad crossing. Furthermore, derailments can be the result of a train colliding with trucks or other vehicles at crossings. In some other cases, the derailment is attributed to inadequate training of the crew operating the train, while other times a switch misalignment can be to blame.\nRailroad derailments can pose health and safety hazards to many people. Passengers and crew members aboard the train may suffer injuries or death, as can bystanders, depending on the location of th..

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What are the advantages of polyploidy in plants?

Heterosis is defined as a crossbred plant species having superior qualities than those of either of its parents. Polyploid plants take advantage of this in several ways. For example, allopolyploids, which are polyploids with chromosomes derived from different species, prevent intergenomic recombination, which allows subsequent generations to have the same amount of varied sets of chromosomes or different alleles corresponding to the same position on chromosomes. Essentially that means greater genetic variety.\nGene redundancy is when several genes of a plant species perform the same function, ..

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Are CD cases recyclable?

In order for polycarbonate plastic CD cases to be the most recyclable, there needs to be a large number of them, so recycling centers collect them for this purpose. Recycling these cases is important due to the toxic chemicals that the cases can release when incinerated.An alternative to recycling CD cases it to reuse them. For example, people can sell them secondhand to music collectors or use them for craft projects.

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What are some rhinoceros viper facts?

Rhinoceros vipers are clad in green, blue, black and red colors, which help the snakes to camouflage very effectively in the dappled light of the forest floor. Primarily ambush hunters, rhinoceros vipers primarily hunt mice and rats; they also eat frogs, fish or lizards when the opportunity arises. Prey is killed via the snakes’ hemotoxic venom, which is delivered via two large, folding fangs that are located in the front of their mouths.\nRhinoceros vipers are generally calm snakes that are unlikely to bite unless they feel threatened or handled. They primarily rely on their camouflage to a..

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What colors make white?

The colors that are seen are the result of wavelengths of light reflected to the eyes. Normally, eyes cannot distinguish these wavelengths and can only see all colors mixed in a wave of white light. A rainbow is a natural phenomenon that shows the dispersion of the visible light spectrum. Water pockets in the air during rain act as a prism that breaks white light into visible wavelengths of various colors.

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