What is a mass of nucleus? By definition, the mass of the carbon-12 nucleus is 12u, where u is the atomic mass unit (amu), equal to 1.66 x 10^-27 kg. The mass of an isolated proton has been measured to be 1.0073u and that of a neutron is 1.0087u (about 0.14% larger). What limits the […]
Why the Colour of oxygen cylinder is black?
Why the Colour of oxygen cylinder is black? Upper curved part of the cylinder is known as shoulder and the lower as the body. Different color combinations of shoulder and body are used for different gases. Color codes of gas cylinders may differ from country to country….Color Codes for the Gas Cylinders in Pharmaceuticals. S. […]
Did Archimedes invent pi?
Did Archimedes invent pi? The Egyptians calculated the area of a circle by a formula that gave the approximate value of 3.1605 for π. The first calculation of π was done by Archimedes of Syracuse (287–212 BC), one of the greatest mathematicians of the ancient world. How many element has P A If a? We […]
What happens to RF values when you change solvents?
What happens to RF values when you change solvents? The eluting power of solvents increases with polarity. Non-polar compounds move up the plate most rapidly (higher Rf value), whereas polar substances travel up the TLC plate slowly or not at all (lower Rf value). Why RF values are different? The larger an Rf of a […]
How do I know if weight gain is muscle or fat?
What is the average acceleration of a runner?
What is the average acceleration of a runner? This shows Usain with an average speed of 5.38 m/s at a time of 0.91 seconds and 9.83 m/s at 2.35 seconds. From this, I can calculate the average acceleration (during this interval) to get a value of 3.09 m/s2. How fast can a human accelerate without […]
What are the 3 types of compound words?
What are the 3 types of compound words? Compound words can be written in three ways: as open compounds (spelled as two words, e.g., ice cream), closed compounds (joined to form a single word, e.g., doorknob), or hyphenated compounds (two words joined by a hyphen, e.g., long-term). Sometimes, more than two words can form a […]
What is flux give example?
What is flux give example? Flux is a chemical purifying agent, flowing agent or cleaning agent. Some examples of flux include: Ammonium chloride. Zinc chloride. Hydrochloric acid. What are types of flux? Types of Flux Magnetic Flux. It means the number magnetic field lines passing through a closed surface. Electric Flux. It means the number […]
How did people track animals?
How did people track animals? Scientists have been using VHF radio tracking since 1963. In order to use VHF radio tracking, a radio transmitter is placed on the animal. Usually, the animal is first sedated. While the animal is asleep, the scientists gather information about the health and condition of the animal. What is Movebank? […]