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मंगलवार, 20 जुलाई 2021

Liquid

Liquid

In this state of matter the volume is fixed but size is not for mutual attraction force in their molecules is weaker then solids. the density of the fluid is more then gas and less then solid.

Water is a liquid. The shape of the liquid is not fixed. It takes the shape of its character. Liquid can flow. liquid can be poured or dispersed. The Properties of liquid are intermediate between those of solid or gas. The intrauterine forces of the liquid are weaker then the solid but stronger then the gases.

The position of the constituent particles in the liquid is not as fixed as that of the solid, but they are free to move like as gases. The intrauterine forces in the liquid and stronger then gases.

The constituent particles of a liquid break apart from each other into molecules and atoms and are attracted to other molecules. If an attracted to another molecules. If an attempt is made to pressurize the molecules like a solid.

Mechanical Properties Of Fluids

Fluid

The substance that can flow is a liquid since it cannot maintain stress, it assumes the shape of the same vessel in witch it is placed. Both liquid and gas are liquid.

Pressure

The thrust, which is applied per unit area of a surface, is called pressure. If the entire force (F) is normally on a plane area (A)

The Pressure will be P = F/A.

Pressure is a scalar quantity. The SI unit of pressure is = Nm-2 or Pascal (Pa). The CGS unit of pressure is = dyen The Pressure increase as the area decrease.

1. The type of the wheels of heavy vehicles are made quite wide, because the area of the wheels is wider then type of the wheel of heavy vehicles.the pressure on the road or ground (P = F / A)

2. Camel move easily in the desert, because by the formula, pressure force / area, the feet of the camel are wide because of their area.

3. The surface area of sharp knife cutting edge is very small so that more pressure can be applied to cut the meat.

सोमवार, 19 जुलाई 2021

Matter

A Substance is an object that has weight. occupies space, creates Pressure and obstruction, which has inertia properties and whose existence we can perceive by the senses . A substance is a special type of substance which has certain properties and organization.

States of Matter

(i) On the basis of physical condition.

(ii) On the basis of chemical condition.

On the basis of physical condition.

These are three states of matter depending on the physical stase Solid, Liquid and Gas.

Solid

In the state of matter size and volume are fixed is called solid.

Liquid

In the state of matter no size and volume are fixed is called liquid.

Gas

In the state of matter size and volume are not fixed is called gas.

Stages Of Matter

Stages of Matter

The branch of science in which the structure, composition, properties and action - reaction of matter are studies is called chemistry.

Main Branch Of Chemistry.

1. Physical Chemistry

Under this branch, the general Principles and rules of changes in the internal microstructure of substance and the physical and chemical state of matter are studied.

2. Inorganic Chemistry

Under this branch, the general Properties, organization and uses of abiotic substance are studies. These substance are formed from elements other then carbon and their compounds.

3. Organic Chemistry

Under this branch, compounds of carbon found in or made from biomaterials are studied. In fact, the number of organic compounds in this world is much higher then the total number of compounds of all other elements.

Other Branches Of Chemistry Are:-

1. Analytical Chemistry

2. Bio Chemistry

3. Geo Chemistry

4. Agricultural Chemistry

5. Nuclear Chemistry

6. Astro Chemistry

मंगलवार, 1 जून 2021

social science

Danny Blas, who teaches middle school history and social science at the San Diego School of Creative and Performing Arts, is excited to see his students again.

— Kristen Taketa, San Diego Union-Tribune, "Excited and stressed, San Diego’s educators prepare for first day of in-person school Monday," 11 Apr. 2021By the end of the program, inmates will have earned a bachelor of liberal arts with a focus in one of three majors: cultural humanities, interdisciplinary social science or global intellectual history.— Alaa Elassar, CNN, "Maryland inmates can now earn a bachelor's degree from Georgetown University," 10 Apr. 2021

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'social science.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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Cite this Entry

“Social science.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/social%20science. Accessed 1 Jun. 2021.

Style: MLA

More Definitions for social science

social science

noun

English Language Learners Definition of social science

: the study of human society

: a particular area of study that relates to human behavior and society

See the full definition for social science in the English Language Learners Dictionary

social science

noun

Medical Definition of social science

1: a branch of science that deals with the institutions and functioning of human society and with the interpersonal relationships of individuals as members of society

2: a science (as anthropology or social psychology) dealing with a particular phase or aspect of human society