Category: Physics

Is Can you please a question? Senior Member. “Can” and “could” are both equally polite – the key word is “please”, which is present in both sentences. The sentence beginning with “please can…” is a question, and it should have a question mark. It is a mistake/omission by the writer. Could you please help me […]

What is the fastest diffusion? Diffusion is fastest through gases, followed by liquid, then plasma, and lastly, solids. In chemistry, diffusion is defined as the movement of matter by the random motions of molecules. How do you know how fast a gas will diffuse? It states that the diffusion rate of a gas is inversely […]

How damaging is a sonic boom? Damage due to a sonic boom is possible in light building components which have a large surface and consist of a material with a low tensile strength. Damage is very rare at overpressures up to about 500 N/m* and can only occur at points at which there were earlier […]

How does convection affect the inside of the earth? Inside Earth, the convection of mantle material is thought to cause the movement of the overriding crustal plates, resulting in events such as earthquakes and volcanic eruptions. Where is the Moho interface? The Moho lies almost entirely within the lithosphere. Only beneath mid-ocean ridges does it […]

What are the methods of investigation? Scientists use different methods of investigation in different circumstances. These methods include (in no particular order) fair testing, identifying and classifying, modelling, pattern seeking, and researching. What do descriptive and comparative investigations have in common? Descriptive Investigation: Involve describing and/or quantifying parts of a natural system. Example – observing […]

Is centrifugal a real word? Centrifugal is fake and pushes away from the center. To look up their word-origins, I used the Online Etymology Dictionary. First I looked up “centripetal”. Centripetal force is the force REQUIRED for circular motion. What is known as centrifugal force? Centrifugal force, a fictitious force, peculiar to a particle moving […]

What is the cheapest oil has ever been? On 23 December 2008, WTI crude oil spot price fell to US$30.28 a barrel, the lowest since the financial crisis of 2007–2008 began. Will oil go up to $100 a barrel? Bank of America now sees oil spiking over $100 a barrel from time to time over […]

What frequency does television use? In the US and Canada, the VHF television band occupies frequencies between 54 and 216 MHz and the UHF band between 470 and 890 MHz. In general, VHF channels are numbered 2 to 13 and UHF channels 14 to 51. What frequency are digital TV channels? Digital TV (Freeview) Frequencies […]

What is C in Einstein equation? Now we’re getting to the c² part of the equation, which serves the same purpose as the star-on and star-off machines in “The Sneetches.” The c stands for the speed of light, a universal constant, so the whole equation breaks down to this: Energy is equal to matter multiplied […]

What are the examples of body building food? Body building food means Protein. Chicken, turkey, beef, pork, fish, eggs and dairy foods are high in protein, as are some nuts, seeds, beans, and lentils. Casein or whey are often used to supplement the diet with additional protein. What are two examples of body building foods? […]