Category: Physics

Who devised a commonly used classification system? Carl Linnaeus What Three Kingdoms did Linnaeus divide nature? Linnaean taxonomy divides all of nature into three kingdoms: animal, vegetable (or plant), and mineral (The mineral kingdom does not include living organisms, so it is not discussed any further here.). Both plant and animal kingdoms are subdivided into […]

Is Earth a closed system? The Earth is a closed system for matter That is a list of all basic elemental materials on our planet. Because of gravity, matter (comprising all solids, liquids and gases) does not leave the system. It is a closed box. So the chemical matter we have on Earth will always […]

How do you fix excessive oil consumption? While excessive oil consumption can be a costly and timely fix , sometimes there is an easier fix, such as the PCV valve or oil pan gasket. In the case of internal engine parts, like piston rings, unless you’re an experienced DIYer, it may be best to leave […]

What are the different forms of assessment? What are the types of assessment? Pre-assessment or diagnostic assessment. Formative assessment. Summative assessment. Confirmative assessment. Norm-referenced assessment. Criterion-referenced assessment. Ipsative assessment. What is the difference between assessment tools and assessment techniques? Defining Assessment Methods and Tools An assessment method is defined as the philosophical or pedagogical approach […]

Which chord holds the most tension? Finally dominant chords are the sounds that are going to be most tense in any given key… That’s the reason the 2-5-1 progression sounds so nice and is so widely used. And the reason that the other posters said that the 5th or 7th are the most tense chords. […]

Is steel easy to bend? Most steel bars are either hot-rolled or cold-rolled; a cold rolled bar is shinier than a hot rolled bar, but is also harder to bend. Stainless steel is even harder to bend. The stronger the steel, the more the bend will approximate a “V”, while the weaker the steel, the […]

What is tropical climate zone? Tropical climate is one of the five major climate groups in the Köppen climate classification. Tropical climates are characterized by monthly average temperatures of 18 ℃ (64.4 ℉) or higher year-round and feature hot temperatures. There are normally only two seasons in tropical climates, a wet season and a dry […]

What percentage of carbon 14 remains after 2 half lives? 25 percent What is the use of carbon 14? Carbon-14, which is radioactive, is the isotope used in radiocarbon dating and radiolabeling. … medically important radioactive isotope is carbon-14, which is used in a breath test to detect the ulcer-causing bacteria Heliobacter pylori. How much […]

Why do merry go round turn counter clockwise? Traditionally, horses are mounted from the left side. This is because most warriors were right handed and kept their swords on their left side for fast access. In England, the carousels rotate clockwise so the horses can be mounted from the left, keeping with tradition. Why do […]

How do you tell if an egg is boiled by spinning? Tip: Just place the egg on a hard surface, like the counter, and spin it like a top. As it’s spinning, grab it with your fingers ever-so-briefly and immediately let go. If it keeps spinning, it’s raw. If it stops dead, it’s boiled. How […]