Why electric flux is zero in a closed surface? If there is no net charge within a closed surface, every field line directed into the surface continues through the interior and is directed outward elsewhere on the surface. The negative flux just equals in magnitude the positive flux, so that the net, or total, electric […]
Why is potential energy negative in an atom?
Why is potential energy negative in an atom? When a stable atom is formed, the electron is attracted to the nucleus, r is less than infinity, and the energy will be negative. A negative value for the energy implies that energy must be supplied to the system if the electron is to overcome the attractive […]
What type of energy do we use everyday?
What type of energy do we use everyday? The common forms of energy used in our houses are electrical energy, chemical energy available from fuels, food and energy originating from the sun. Electrical energy is transformed into many forms – mechanical/kinetic, sound, heat, light, and other forms of electromagnetic radiation – by everyday appliances. How […]
Which part of a scientific argument must be supported by valid data Claimevidencereasoningtheory?
Which part of a scientific argument must be supported by valid data Claimevidencereasoningtheory? Evidence is the valid data itself. The reasoning is the approach or the “logic path” you used to reach some theory or claim. What role does evidence play in argumentation? Evidence serves as support for the reasons offered and helps compel audiences […]
Which property is most useful in mineral identification?
Which property is most useful in mineral identification? Hardness Which property is not commonly used to identify minerals? Answer: Mass and size are properties not commonly used to identify minerals. What is the softest mineral? Talc What are minerals and their types? Silicate minerals comprise approximately 90% of the Earth’s crust. Other important mineral groups […]
What can you use instead of a battery?
What can you use instead of a battery? Hydrogen fuel cells. Toyota is still plugging away with hydrogen fuel cell cars and it isn’t the only one working to find a solution. Lithium-sulfur. Graphene supercapacitors. Redox flow batteries. Aluminum-graphite batteries. Bioelectrochemical batteries. Solar panels. Powered roads. What should I do with dead batteries? Ordinary Batteries: […]
How does vanadium get into the body?
How does vanadium get into the body? Vanadium can enter the body via the lungs or, more commonly, the stomach. Most of the dietary vanadium is excreted. The amount of vanadium resorbed in the gastrointestinal tract is a function of its oxidation state (V(V) or V(IV)) and the coordination environment. How do we use vanadium […]
Why does my foot hurt when I kick a soccer ball?
Why does my foot hurt when I kick a soccer ball? There are a number of reasons which have been mentioned (e.g. air temperature affecting ball stiffness, kicking technique, possible injury). Another reason may be that your anatomy hasn’t developed to sustain kicking a ball. Think about how kickboxers can block with their shins. How […]
What causes a light bulb to light in a closed circuit?
What is normal oxygen level at high altitude?
What is normal oxygen level at high altitude? Up in Summit, oxygen saturation is around 92%. Visitors coming to Summit from sea level might see their oxygen saturation drop to around 88% or lower before reaching levels typical at this elevation. At what height is it hard to breathe? An elevation of about 20,000 feet […]