Questions

Amino acids are the building blocks of proteins. There are about 21 essential amino acids in the human body like histidine, leucine, lysine... The general formula for amino acid is R-CH(NH2)-COOH.

Satellites orbit the earth at a speed of 28,000 kmph.

Satellites that are further away actually travel slower. The International Space Station has a Low Earth Orbit, about 400 kilometers (250 miles) above the earth's surface. Objects orbiting at that altitude travel about 28,000 kilometers per hour (17,500 miles per hour).

The size of gear is usually specified by pitch circle diameter.

The word assurance means ‘guarantee’. So the Quality Assurance Group’s role is to guarantee that the product is of high quality. They examine the overall s/w development process and their responsibility is to create and enforce standards and methods to improve it with the goal of preventing bugs from ever occurring.

'M' is used as a unit of molarity and stands for mole per litre i.e, number of moles of solute per liter of solution.