Why is red a danger color? Why are the danger signals red in color? Ans. As the red light has the highest wavelength among all the colours, so it is scattered the least. Due to which most of the light gets reflected back and can travel longer distances through rain, fog, dust etc. to reach […]
What is mechanical efficiency is the ratio of?
What is mechanical efficiency is the ratio of? Mechanical efficiency, measure of the effectiveness with which a mechanical system performs. It is usually the ratio of the power delivered by a mechanical system to the power supplied to it, and, because of friction, this efficiency is always less than one. What causes low volumetric efficiency? […]
Which of the following intermolecular forces is the strongest?
Which of the following intermolecular forces is the strongest? Ion-dipole forces What kinds of forces hold ionic solids together quizlet? What forces hold ionic solids together? Ionic bonds because ionic bonds are much stronger than any intermolecular forces. Ionic solids tend to have: Much higher melting points than molecular solids. What kind of force is […]
Why are energy transfers not 100% efficient?
Why are energy transfers not 100% efficient? The second law explains why energy transfers are never 100% efficient. Because ecological efficiency is so low, each trophic level has a successively smaller energy pool from which it can withdraw energy. This is why food webs have no more than four to five trophic levels. How can […]
How does the voice show work?
How does pollution play a role in greenhouse effect?
How does pollution play a role in greenhouse effect? Some air pollutants cause the climate to warm. Greenhouse gases prevent some of that heat from leaving the atmosphere. The recent increase in greenhouse gas pollution is trapping excess heat and causing the climate to warm. Air pollution includes greenhouse gases such as carbon dioxide. What […]
How important are energy resources to a human?
How important are energy resources to a human? As the rate of energy consumption continues to grow, competition for dwindling energy resources only makes it more difficult and expensive to keep up the same levels of consumption. One of the reasons that energy resources are so important is that they make it possible for a […]
Who described the shape of the earth?
Who described the shape of the earth? Isaac Newton What is an oval sphere called? prolate. A spheroid, or ellipsoid of revolution, is a quadric surface obtained by rotating an ellipse about one of its principal axes; in other words, an ellipsoid with two equal semi-diameters. A spheroid has circular symmetry. What is a globe? […]
Why is relative frequency important?
Why is relative frequency important? Relative frequency histograms are important because the heights can be interpreted as probabilities. These probability histograms provide a graphical display of a probability distribution, which can be used to determine the likelihood of certain results to occur within a given population. What is relative class frequency? In a relative frequency […]
Is sulfuric acid a binary compound?
Is sulfuric acid a binary compound? It is element stem + “ic acid” (or “ous acid”). This gives names like sulfuric acid and nitric acid. The “hydrogen name” is formed as if the substance were an ionic compound. So the name would be hydrogen sulfate, but that name is hardly ever used. Is hydrocyanic acid […]