Category: Physics

What are soil remediation techniques? Remediation techniques which have been commonly used include: containment, pump-and-treat, extraction, stabilization/solidification, soil washing, air stripping, precipitation, vitrification, thermal desorption and biological remediation. What are the methods of soil remediation? Options for treating contaminated soil include: Biological treatment/bioremediation uses bacteria to break down substances in the soil. Chemical oxidation converts […]

What happens if you bake a cake too long? An oven that’s too hot and a batter that’s exposed to heat too long can give you dried out dessert. Also, if you find your cake is too dry even with the right baking time and temp, you may be adding too many dry ingredients (think […]

What size beam do I need to span 10 feet? A double 2×12 beam can span 12 feet; a (2) 2×10 can span 10 feet and so on. How far can a 2×12 span without support? In general terms, joists spaced 16 inches on center can span 1.5 times in feet their depth in inches. […]

Why energy is stored in form of ATP? Cellular energy is primarily trapped and stored in the form of adenosine triphosphate or ATP. To trap energy released from exergonic catabolic chemical reactions, the cell uses some of that released energy to attach an inorganic phosphate group on to adenosine diphosphate (ADP) to make adenosine triphosphate […]

Is friction useful in rowing? The force of the water pushing on the spoon during rowing will make the boat speed up, and the force of the drag will cause the boat to slow down. Another important point is that static friction between the rower’s backside and the boat is causing the rower to stay […]

What is the hardest question to ask? Hard Questions to Ask Yourself, and Even Harder Questions to Answer Do you feel like you’ve lived this same day many times before? Are you living the life of your dreams? What would you do if fear was not a factor and you could not fail? What were […]

Does aluminum expand faster than steel when heated? The coefficient for aluminum is 2.4, twice that of iron or steel. This means that an equal temperature change will produce twice as much change in the length of a bar of aluminum as for a bar of iron. Lead is among the most expansive solid materials, […]

What is the evidence that volcanic activity can affect global temperatures? The gases and dust particles thrown into the atmosphere during volcanic eruptions have influences on climate. Most of the particles spewed from volcanoes cool the planet by shading incoming solar radiation. The cooling effect can last for months to years depending on the characteristics […]

How did Earths oceans form? According to this theory, the ocean formed from the escape of water vapor and other gases from the molten rocks of the Earth to the atmosphere surrounding the cooling planet. After the Earth’s surface had cooled to a temperature below the boiling point of water, rain began to fall—and continued […]

What keeps the heat in Earth? There are three main sources of heat in the deep earth: (1) heat from when the planet formed and accreted, which has not yet been lost; (2) frictional heating, caused by denser core material sinking to the center of the planet; and (3) heat from the decay of radioactive […]