Category: Physics

What is the largest possible rank? 5. The largest possible rank of an m by n matrix is the minimum value of m and n. The largest possible rank gives the smallest possible nullity. (a) Since A is 4 by 4 the largest possible rank is 4, the smallest possible nullity is 0. Could a […]

Can you mix hydrochloric acid with water? Heat is released when strong acids are mixed with water. If you add water to acid, you form an extremely concentrated solution of acid initially and the solution may boil very violently, splashing concentrated acid. Can u drink hydrochloric acid? Ingesting concentrated hydrochloric acid can cause pain, difficulty […]

Is 30 watt soldering iron enough? A 30 watt ‘simple soldering iron’ is okay for modest electronics. Soldering ordinary through hole electronic components and thin (e.g. mm) wire, even the thin metal legs on DC power plugs and sockets, should be fine. A simple iron relies on thermal equilibrium to maintain its temperature. What is […]

Can sugar make my child angry? Sugar. Sugar can cause a child to be hyperactive. Unless they’re eating a whole foods-based diet, sugar is in just about everything the average child eats. Sugar has been shown to cause long-term health damage, and a diet high in processed foods has been linked to depression, cognitive delay, […]

Does Earth have a weight limit? Earth isn’t resting on any support. There is nothing to put a scale between the Earth and in order to measure its weight, so like the ISS, the moon, and any other orbiting body, it cannot have any weight. Is Earth losing mass? Earth’s mass is variable, subject to […]

Did Chinese invent printing press? Created in China, the printing press revolutionized society there before being further developed in Europe in the 15th Century by Johannes Gutenberg and his invention of the Gutenberg press. What was the first printed edition of the Bible called? Gutenberg Bible Who owns a Gutenberg Bible? Hans P., Kraus Who […]

What is the process of transformation? Bacteria can take up foreign DNA in a process called transformation. Transformation is a key step in DNA cloning. It occurs after restriction digest and ligation and transfers newly made plasmids to bacteria. After transformation, bacteria are selected on antibiotic plates. How long is bacterial transformation? Incubate the competent […]

What increases soil salinity? Salinization on the soil surface occurs where the following conditions occur together: • the presence of soluble salts, such as sulfates of sodium, Summer fallow management practices may cause increased salinization by increasing the soil moisture content to the point that water moves to seeps on hillslopes. How do you control […]

What forces are acting when sitting on a chair? There are at least two forces acting on you as you sit in the chair. One is the force of gravity which is the Earth pulling you straight down. The other is the upward push of the chair you are in which counteracts the pull of […]

What is the function of the corpus callosum? The two hemispheres in your brain are connected by a thick bundle of nerve fibres called the corpus callosum that ensures both sides of the brain can communicate and send signals to each other. Do the two hemispheres of the brain work together? Each hemisphere of the […]