Science

Refine Search

What is the specific heat of chromium?

The relationship between heat and specific heat can be expressed as Q = cmdeltaT where Q = heat added, c = specific heat, m = mass and deltaT = change in temperature. If a phase change has occurred, the relationship does not apply because the temperature is not changed by heat added or removed during the change. The specific heat of water is higher than any other common substance, including metal, illustrating the importance of water in temperature regulation.

Continue Reading

How do I calculate stride length?

A stride length is the distance covered by two steps, or the distance between where the left heel touches down and then touches down again. Some users confuse stride length with step length. To measure a step length, use the wet puddle method, but measure from the heel of the left footprint to the heel of the right footprint.

Continue Reading

How do you convert 46 degrees Celsius to Fahrenheit?

Multiply 46 by 180/100First, multiply 46 degrees Celsius by 180/100. The answer is 8280/100.Simplify the answerThe answer 8280/100 can be simplified by dividing the denominator through the numerator. The answer is 82.8. Add 32 degreesThe Fahrenheit scale is 32 degrees above the Celsius scale, therefore add 32 to the previous answer. 82.8 plus 32 equals 114.8 degrees Fahrenheit, which is equal to 46 degrees Celsius.

Continue Reading

What did Joseph Louis Proust discover?

Proust showed, using various metal oxides, that there were no intermediates between the core elements and the final substance. However, since that time, there have been new compounds discovered that do not adhere to this law. In honor of Berthollet's original views, these compounds are called Berthollides.

Continue Reading

What are the four phases of mitosis?

Mitosis Overview\n\nMitosis is a form of cell division where one cell divides and creates two identical cells. The original cell is the called the parent cell, and the new cells are called daughter cells. The body uses mitosis for growth as our bodies mature and for repair. A cut or scrape requires mitosis of the nearest skin cells in order to heal. In general, there are four main phases in the mitosis process.\n\nProphase\n\nThe first stage of mitosis, prophase begins with DNA condensation. The chromosomes shorten and the nucleoli disappear. To prepare for organizing the chromosomes, the nucl..

Continue Reading

When is deforestation good?

New Hampshire's White Mountains are one region in which deforestation has advantages. The high latitude and elevation make this area rich in snowfall, and the cold climate in the area, as well as the infertile soil, means that forests cannot grow particularly quickly or abundantly. Once the snow falls, it stays in the area well into the spring. Deforestation would make it easier to clear the area for the timber industry each year and to take advantage of the surface reflection of solar energy coming to the area.\nResearchers have found that leaving forests in place is counterproductive in..

Continue Reading

What is the definition of "meiosis 2"?

Meiosis II is a process that includes prophase II, metaphase II, anaphase II, telophase II and cytokinesis. In prophase II, spindle fibers form inside the cells. Next, chromosomes align along the metaphase plate during metaphase II. In anaphase II, the chromosomes divide at their centromeres and migrate to each pole of the cell. During telophase II and cytokinesis, the chromosomes form four haploid nuclei, and the cells break apart to form four haploid cells.

Continue Reading

Which term best describes centrioles beginning to move apart in animal cells?

The prophase stage of mitosis begins with the disappearance of the nucleoli in the nucleus. This is followed by the formation of chromosomes, which result from the coiling and condensing of chromatin fibers. These chromosomes then form pairs and join at the centromere of the cell.\nBefore centrosome separation, spindle fibers begin to form in the cytoplasm of the cell. When the centrosomes move apart, the spindle fibers between them lengthen. The period after centrosome movement is called the metaphase.

Continue Reading

How are metamorphic rocks made?

Direct contact with hot magma is called contact metamorphism. When a sedimentary or igneous rock meets magma, fluids and vapors are created in the existing rock, changing the rock's chemical composition. Regional metamorphism occurs due to the extreme pressure built up from the process of the Earth thrusting upward to form mountains. This intense pressure causes a change in temperature, which can chemically alter the contents of the rock. Dynamic metamorphism also occurs due to intense pressure and is linked to sudden geographic upheavals.\nDue to the intense heat and pressure required to..

Continue Reading

What does the acronym LASER stand for?

Lasers are used in many applications from medical treatments to technology. The year 1974 saw its first use in people's daily lives in the form of barcode scanners, followed by CD technology in 1978 and 1982's invention of the laser printer.\nMore lasers can be found in laser pointers, marking targets, laser light shows, acne treatments, bloodless surgery and missile defense. In 2004, over $2 billion worth of lasers were sold.

Continue Reading
Showing 2501 to 2510 of 10000 (1000 Pages)