Answer: Direction
Explanation: A vector is a geometrical representation of physical quantity. It has a particular direction with a specific magnitude. In the geometry of space whether it is two dimensional or three dimensional the vector quantity has a specific direction. Such as a stone is thrown with a velocity in a particular direction.
The path of the stone in three-dimension shows its direction and speed is its magnitude.
Hence, the velocity of stone has two property magnitude mentioned as speed and particular direction. On writing the mathematical expressions for vectors, it is denoted by arrow mark on its top as shown below.
Answer:
The Principia was eventually published in 1687. After publishing the work, the Royal Society told Halley it could no longer afford his salary and offered to pay him in unsold copies of the Historia Piscium instead.
Explanation:
But the Royal Society refused to fund the book because it had suffered huge financial losses publishing 'The History of Fish', an indigestible tome of piscine anatomy which barely sold and nearly bankrupted the institution.
They have the same velocity because their displacements (shortest line from point A to point B, which is a straight line) are the same and they meet at the same time.
Answer:
Explanation:
Ions are substances the have lost or gained a certain amount of electrons. This makes them either positively or negatively charged.
They are charged particles.
- Every atom is made up of protons, neutrons and electrons.
- They are the three fundamental particles in any atom
- The protons and neutrons are located in the central part called the nucleus of an atom. It is a simple tiny space.
- Protons are positively charged particles. Neutrons do not carry any charges. Therefore, the nucleus is negatively charged.
- Electrons are negatively charged particles. They occupy the bulk volume of an atom.
Every atom is neutral and the number of protons and electrons are the same. The equal number of protons and electrons balances to attain neutrality of an atom.
Electrons are very easy to lose since they occupy the outermost shell.
- When an atom loses an electron, the number of protons is more than electrons. Therefore, it becomes positively charged. Hence, its is called an anion.
- An atom can also gain an electron, the electron number will be more than the protons. They then become negatively charged and are called cation.
Cations and ions are substances that are produced to attain a special type of bonding called electrovalent bonding.
Oppositely charged substances attracts one another.
