Question

Define the following

a. gravity
b. soluble substance
c. weather

•no allow copy paste
• Kindly don't spam.
• Quality answer needed​

Answer 1

Answer:

1) Gravity is a force of attraction that pulls together all matter (anything

you can physically touch). The more matter something has, the greater

the force of its gravity.

2) The substances which dissolve in water is known as soluble

substances.

3) The day-to-day condition of the atmosphere at a place is called

weather.

Answer 2

${\large{\sf{\pmb{\underline{Required \; Qualitied \; Answer...}}}}}$

$\qquad \qquad \qquad {\small{\underline{\boxed{\sf{\circ \: \: Gravity...}}}}}$

➟ The gravitational force of earth is known as gravity i.e., gravity is the force by which earth pulls a body toward it's centre.

➟ The acceleration produced in a body due to force of gravity is known as acceleration due to gravity. Acceleration due to gravity is denoted by “g”. And g's value is 9.8 m/s².

➣ Acceleration due to gravity is independent of shape, mass and size of the mass of the body.

➟ Gravitation- Every body attract other body by a force called force of gravitation.

➣ Newton's law of gravitation- The force of gravitational attraction between two points bodies is directly proportional to the product of their masses and inversely proportional to the square of the distance between them. Considering two points ${\sf{m_{1} \: and m_{2}}}$ are placed at a distance ${\sf{r}}$ The force of gravitational attraction between them, ${\sf{F \: = G\dfrac{m_{1} m_{2}}{r^{2}}}}$ Here ${\sf{G}}$ is constant called universal gravitational constant. The value of G is ${\sf{6.67 \times 10^{-11} Nm^{2}/kg^{2}}}$

$\qquad \qquad \qquad {\small{\underline{\boxed{\sf{\circ \: \: Soluble \; Substance...}}}}}$

➟ Those substances which are soluble in water is known as soluble substance.

➟ Physical classification of matters are divided into three forms - Solid state, liquid state and gaseous state.

• Solid state possesses definite shape and definite volume like metals, woods etc.
• Liquid state possesses definite volume but no definite shape like water, oil, milk etc.
• Gaseous state does not have any definite shape and volume like air, oxygen etc.

➟ Mixtures are that material obtain by mixing two or more substances in any indefinite proposition like milk, sea water, petrol etc. There are two types of mixture as Homogeneous mixture and Heterogeneous mixture.

➣ There are so many ways to separate mixtures. Let's see some ways to separate mixtures - Sublimation, filtration, evaporation, condensation, fractional distillation, purification, sedimentation, decantation, chromatography, distillation.

$\qquad \qquad \qquad {\small{\underline{\boxed{\sf{\circ \: \: Weather...}}}}}$

➟ Weather - Changes that take place in the atmosphere at given place and time make up the weather of any place.

The day to day condition of the atmosphere at a place with respect to the temperature, humidity, rainfall, wind speed etc is called the weather of any place.