Question

answer following questions in one sentences.
1)what is meaning of sound.
2)define momentum. Write it SI and cgs unit
3)Write one examples of each - acidic and basic substances in day to day life ​

Answer 1

Answer:

1.something that you hear or that can be heard

2.Momentum is the quantity of motion of a moving body, measured as a product of its mass and velocity

SI units, if the mass is in kilograms and the velocity is in meters per second

cgs units, if the mass is in grams and the velocity in centimeters per second

3.basic

Sodium Bicarbonate 

acidic

Acetic Acid

Answer 2

Explanation:1)something that you hear or that can be heard2)The momentum of the body is denoted by 'p' , mass is denoted by 'm' and velocity by 'v' So, p=mv. momentum has a sense of direction and hence it is a vector quantity. The SI unit of momentum is kgm/s and the CGS unit of momentum is g/cms.3)example of acidic-Sulphuric acid which is used in the manufacture of fertilisers, paints, dyes, chemicals, plasti-cs and synthetic fibres,example of basic-Soaps and bath products hope it helps you