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Social Sciences

The study of human society and of individual relationships in and to society.

5,538 Questions

Is there any substences which can be founde in three states like water?

Yes, carbon dioxide is another substance that can be found in three states: solid (dry ice), liquid (carbon dioxide dissolved in water), and gas (carbon dioxide in the atmosphere).

What three properties of a medium affect the speed of sound?

Short Answer:

The speed of a sound wave depends on two properties of a medium, density and elasticity. Changes in temperature and pressure affect these properties and, of course, a change in the chemical or physical composition of a material affects these properties.

Long Answer:

Specifically, for basically all substances, the speed of sound equals the square root of the ratio of the elastic constant divided by the density.

Solids, for instance, generally become less elastic, i.e. the elastic constant gets larger, as temperature is lowered, so the speed of sound should increase.

In air and most gasses, the speed of sound depends on the temperature and not much else (i.e. not pressure) because the density and elasticity change in ways that compensate and leave the speed unchanged.

There are different kinds of sound waves. The usual simple longitudinal (compression) waves that we are familiar with as sound detected by our ear are what we usually mean by the word sound, but there are also transverse matter vibrations also called shear waves. Earthquakes provide an example of both types of these wave, but actually any solid material can have both shear and compression waves. The rules, ratio of elastic constant to density, are true for both types of waves.

The speed of a wave can depend on the frequency, but this is generally a small effect for sounds in the range of the human ear. (This is called dispersion.)

We understand this phenomenon by saying that the elastic constant depends on frequency or wavelength. Explaining the cause of that would be a whole different answer to a different question. (See related questions link.)

As an example of change due to chemical composition, it is well known that humid air propagates sound differently than dry air, but this is basically because it changes the density of air.

An example of a material change that is obvious is the freezing of water. At zero degrees centigrade, water can be either liquid or solid. The two forms propagate sound very differently.

Caveat: This is true for gasses, solids and liquids, but for peculiar things like plasmas it may be different.

Where can you find a map of Ontario that shows the latitude and longitude lines on it?

Most good road atlases and fold-up road maps show latitude and longitude marks along the borders

of each map, although the lines aren't drawn across the map.

Also, every package of road-atlas computer software has complete lat/long data, for every

place it displays.

If the solution has more solute than it can hold it is called what?

If a solution has more solute than it can hold, it is called supersaturated. This means that the solution is unstable and may precipitate out excess solute if disturbed.

What is the best infant formula?

All formulas across the board are nutritionally equal. The FDA requires formula manufacturers to make them all nutritionally equal, so it doesn't matter if you get a national name brand or a store brand... They're essentially the same thing. Why not try Parent's Choice, if you have a Walmart near you? They have a formula finder (linked below) that can help you find the formula that may work best with your baby.

Check out the nutrition labels on their site too.. if you go to Formulas, then click on the formula you're looking into, they have their nutrition information right alongside the comparable name brands. You'll see they are nutritionally equal. You can also use the Formula Calculator to see how much money you could save if you switched to a store brand over the national name brand. (Linked Below)

Why did racial unrest erupt in the summer of 1919?

The riots were sparked by postwar tensions of racism, unemployment, inflation, and violence by radical political groups. (Sourced from Wikipedia, available at http://en.wikipedia.org/wiki/Red_Summer_of_1919)

Are small fossils more common than big ones?

Yes, small fossils are generally more common than big ones. Small fossils are more easily preserved and less likely to be destroyed over time compared to larger fossils, making them more abundant in the fossil record. Additionally, the small size of some organisms may contribute to their higher numbers in the fossil record.

What are the main things about sedimentary rock?

Usually, sometimes sedimentary rocks can be found creating on the side of pool's. And even though sedimentary rock is small, they can be used for big thing. Like houses, or even sculptures.

6 billion years ago when the earth was forming there were no Sedimentary rocks, as well as metamorphic, but there were igneous rocks. It was 3.9 billion years ago when the first sedimentary rocks began to appear!

What are the factors enforcing group formation?

Factors that enforce group formation include shared goals or interests, a sense of belonging or identity, the need for social support or cooperation, and the presence of external threats or challenges that require collective action. Additionally, factors such as proximity, communication channels, and social norms can also influence group formation.

What is class 9 sst projects?

Class 9 SST projects can refer to social science projects that students in 9th grade are assigned to research and present on topics related to history, geography, civics, and economics. These projects help students deepen their understanding of the subject matter and hone their research and presentation skills. Examples of class 9 SST projects could include creating a timeline of historical events, analyzing maps to understand geographical features, or exploring the impact of government policies on society.

What does winter stand for?

Winter is one of the four seasons characterized by cold temperatures, shorter days, and often snowfall in many regions. It is a time of dormancy in nature when plants stop growing, animals hibernate, and people typically wear heavier clothing to stay warm. Winter can also signify a period of rest, reflection, and preparation for the coming spring.

Who was alferd the great?

Do you mean Alfred the Great? Because if you do he was King of Wessex from 871 to 899. Alfred is noted for his defence of the Anglo-Saxon kingdoms of southern England against the Vikings, becoming the only English monarch still to be accorded the epithet "the Great". Alfred was the first King of the West Saxons to style himself "King of the Anglo-Saxons". Details of his life are described in a work by the Welsh scholar and bishop Asser. Alfred was a learned man who encouraged education and improved his kingdom's legal system and military structure. He is regarded as a saint by some Catholics, but has never been officially canonized. The Anglican Communion venerates him as a Christian hero, with a feast day of 26 October, and he may often be found depicted in stained glass in Church of England parish churches.

Why are lichen important after an area is devastated by a volcano?

probably because lichens absorb most gases and minute particles from erupted mountain, this include fluorine, arsenic, etc., therefore it can be used as bio-indicator of the environmental healthiness after volcano's eruption.

Which animals have 206 bones in their body aside from humans?

Adult giraffes also have 206 bones in their body, like humans. This includes different types of bones like the skull, ribs, and vertebrae.

What represents the physical characteristics of the individual?

Physical characteristics of an individual refer to their outward appearance, such as height, weight, hair color, eye color, skin tone, and body structure. These characteristics are determined by genetics and can vary among different people.

What are the collums of the elements called on the periodic table?

The columns of elements on the periodic table are called groups. Each group contains elements with similar chemical properties due to their shared number of electrons in the outermost energy level.

Is Delhi north or south of the Equator?

India is entirely in the northern hemisphere. In fact, the southernmost point in India is about 7 degrees north.

How do forces work in pairs?

According to Newton's third law of motion, for every action there is an equal and opposite reaction. This means that when one object exerts a force on another object, the second object exerts an equal force in the opposite direction on the first object. These pairs of forces are known as action-reaction force pairs.

Under normal circumstances water boils at?

100°C (the definition of 100 degrees Celsius is the triple point of water) By "normal" I assume you mean standard pressure.

What are Quartz talc halite magnetite feldspar mica?

These are names of different minerals commonly found in the Earth's crust. Quartz is a hard mineral composed of silicon dioxide. Talc is a soft mineral used in cosmetics and talcum powder. Halite is rock salt, composed of sodium chloride. Magnetite is a magnetic iron ore. Feldspar and mica are both common rock-forming minerals found in many types of rocks.

What two things do sedimentary rocks record?

Sedimentary rocks can record information about the environment in which they formed, such as the presence of water, wind, or ice. They can also preserve evidence of the organisms that lived in that environment, including fossils.

Compare and contrast igneous and metamorphic rock formation?

Metamorphic rocks are formed by heat and pressure. Sedimentary rocks are formed by Lithification. Metamorphic rocks texture depends on how much eat and pressure was exerted on it. Sedimentary rocks texture is usually fine grained. Not much i could find on compare.

Which part of Canada is very mountainous?

The western part of Canada, particularly the province of British Columbia, is known for its mountainous landscapes. The Rocky Mountains run through this region, forming rugged terrain and dramatic peaks that attract outdoor enthusiasts and tourists alike.

Evaluate how different factors affect reaction rates for a given industrial reaction?

There are thousands if not millions of Industrial Reactions going on all over this planet

There are hundreds of different factors which do affect each of the Industrial Reactions

The question is simple the answer is not