Category: Physics

What are the evidences of physical and chemical changes? Common physical changes include melting, change of size, volume, color, density, and crystal form. The classic baking soda and vinegar reaction provides evidence of a chemical change due to the formation of a gas and a temperature change. Is a change in texture physical or chemical? […]

Does bulb have electromagnet? the core of an electromagnet must be a metal that can allow current to flow and can produce necessary magnetic field. What type of light does this light bulb produce most? continuous light Does a compass use electromagnets? The needle of a compass is itself a permanent magnet and the north […]

What is formula for time and distance? You can use the equivalent formula d = rt which means distance equals rate times time. To solve for speed or rate use the formula for speed, s = d/t which means speed equals distance divided by time. To solve for time use the formula for time, t […]

What do spores release? Spores are usually haploid and unicellular and are produced by meiosis in the sporangium of a diploid sporophyte. Under favourable conditions the spore can develop into a new organism using mitotic division, producing a multicellular gametophyte, which eventually goes on to produce gametes. Where can fungi spores be found? Fungal spores […]

Is air a renewable? Air and water are renewable natural resources too. There is one other type of renewable natural resource. It includes sources of power like sun and wind energy. Are plants renewable or nonrenewable? Plants are a renewable resource because they grow quickly and can replace themselves at fast rates. Several factors influence […]

What is the SI unit of charge and current? Coulomb. The coulomb is the SI unit of charge. The size of a coulomb is derived from the ampere. One coulomb is defined as the amount of charge flowing when the current is 1 ampere. What is the SI unit of charge define it? The coulomb […]

How hard is it to push a car uphill? If you have a winch or a tow-strap (and a friend to pull your car with said tow-strap) then you’d be in business, but pushing any car up an incline in the dry is virtually impossible (it takes effort to move a car even on a […]

What is a ABPI Doppler? Ankle brachial pressure index (ABPI) The ABPI is the ratio of the ankle systolic blood pressure to the brachial systolic blood pressure and can be measured using a sphygmomanometer and a hand held Doppler device [SIGN, 2010]. It is the most reliable way to detect arterial insufficiency. What should ABPI […]

What is another name for NaCl? Sodium chloride /ˌsoʊdiəm ˈklɔːraɪd/, commonly known as salt (although sea salt also contains other chemical salts), is an ionic compound with the chemical formula NaCl, representing a 1:1 ratio of sodium and chloride ions. Which is another word for sodium *? What is another word for sodium chloride? NaCl […]

How do you write a research question example? All research questions should be: Focused on a single problem or issue. Researchable using primary and/or secondary sources. Feasible to answer within the timeframe and practical constraints. Specific enough to answer thoroughly. Complex enough to develop the answer over the space of a paper or thesis. What […]