Category: Physics

Is the Schrodinger equation second order? In non-relativistic quantum mechanics, we have Schrödinger’s equation, which is first-order. But not every quantum particle is a fermion, and, AFAIK relativistic non-fermion particles obey the Klein-Gordon equation, which is second-order! Is the Schrodinger equation true? Consider the Schrödinger equation, which allows you to compute the “wave function” of […]

What is CP CV called? The Cp/Cv ratio is also called the heat capacity ratio. (i.e.) Heat Capacity ratio = Cp/Cv = Heat capacity at constant pressure/ Heat capacity at constant volume. How do you calculate CP in thermodynamics? cp = cv + R The specific heat constants for constant pressure and constant volume processes […]

Is AlCl3 a Lewis acid or base? Aluminum chloride (AlCl3) is a Lewis acid because the aluminum atom has an open valence shell. When aluminum chloride is under discussion it is called a Lewis acid or an electrophile. Is Oh Lewis acid or base? A Lewis base is any substance, such as the OH- ion, […]

What are the 5 phases of the moon? There are five phases of the moon: new, crescent, quarter, gibbous and full. How do you tell if the moon is getting bigger or smaller? When the bright part is getting bigger, the Moon is waxing. When it is getting smaller, the Moon is waning. When the […]

Can dog whistles damage human ears? Some sounds (such as gunfire or standing next to a helicopter) are so loud (120-160 dB), that any brief exposure to them without wearing earmuffs or earplugs can damage hearing. (This means that the dog whistles are at a very high frequency but that they do not move the […]

Does the brain sit in fluid? Being surrounded by CSF helps the brain float inside the skull, like a buoy in water. Because the brain is surrounded by fluid, it floats like it weighs only 2% of what it really does. If the brain did not have CSF to float in, it would sit on […]

What are the different levels of a food pyramid called? There are six categories in the Food Pyramid: the bread, cereal, rice, and pasta group (grains), the fruit group, the vegetable group, the meat, poultry, fish, dry beans, eggs, and nuts group (protein), the milk, yogurt, and cheese group (dairy), and the fats, oils, and […]

Is 30 minutes of cardio a day enough to lose weight? A new study shows 30 minutes of exercise a day works just as well as an hour in helping overweight adults lose weight. Can you burn fat without cardio? That’s right – you can cut without doing traditional cardio. There’s no denying that sprints […]

Is coal a energy? Coal is a combustible black or brownish-black sedimentary rock with a high amount of carbon and hydrocarbons. Coal is classified as a nonrenewable energy source because it takes millions of years to form. What emerging technologies will make coal safer? Low-NOx burners allow coal-fired plants to reduce nitrogen oxide emissions by […]

Can an electric field be infinite? 3 Answers. So there is no infinity. In two dimensions (or in one), the electric field falls off only like 1r so the potential energy is infinite, and objects thrown apart get infinite speed in the analogous two-dimensional situation. Does electric field increase with distance? Electric field strength is […]