How can sound waves be used to put out fire

1 answer:

7 0

The acoustic extinguisher works by using sound waves—a type of pressure wave—to push oxygen away from the source of a flame and spread it over a larger surface area. These actions break the fire combustion triangle made up of heat, fuel, and oxygen, the three elements required for a fire to burn.

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Which contributes to the polarity of a water molecule

Arada [10]

This deflection of the two hydrogen atoms to one side of the molecule is because of two love pairs of electrons on the other side of the oxygen atoms. In addition, due to the high electronegativity of an oxygen atom (since it has more protons) , it attracts most of the electron cloud of the molecule. The oxygen side of the water molecule is partially negative (negative dipole) while the hydrogen sides are partially positive (positive dipole).

8 0

3 years ago

Which shows evidence of active transport?

Aloiza [94]

Cells X and Y.
Have a nice day.

4 0

3 years ago

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What is the linkage that binds one monosaccharide to another?

ra1l [238]

Answer:

hope this helps

Explanation:

glycosidic bond

A covalent bond formed between a carbohydrate molecule and another molecule (in this case, between two monosaccharides) is known as a glycosidic bond (Figure 4). Glycosidic bonds (also called glycosidic linkages) can be of the alpha or the beta type.

4 0

3 years ago

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Complete the following paragraph to describe how the electrostatic forces in salt compounds can be overcome by interactions betw

motikmotik

Answer:

The words are: (2) ionic bonds; (3) ion-dipole forces; (4) soluble; (8) higher

Explanation:

-Salts are composed of ions that form a tightly packed and ordered network, which is called a crystal lattice, and it is held together by ionic bonds.

Explanation: salts are ionic compounds, which are composed by oppositely charged ions (cations and anions) which are bonded each other by ionic bonds, in an ordered arrangement, often a crystalline solid.

-When a salt is added to a polar solvent like water, the ions interact with the solvent molecules via ion-dipole forces, which overcome the forces originally holding the ions together.

Explanation: the molecules of a polar solvent are dipoles because they have dipolar momentum (a difference in charge due to a electronegativiy difference). When a salt is dissolved in a polar solvent, it dissociates in ions. So, the resulting interactions between these species are ion-dipole forces.

-The ions are then isolated and stabilized in solution via these interactions, and when this occurs for most of the salt compound, it is considered soluble in that solvent.

Explanation: the ions in solution are surrounded by solvent molecules which stabilizes them. A salt which is enterely dissolved in a solvent is soluble in that solvent.

-Due to the nature of the interaction between ions and solvent molecules, a concentration of ions can be dissolved higher in water than in alcohol.

Explanation: water molecules have unique properties that make water an universal solvent. Due to these properties and its polarity, water can dissolve larger quantities of salt than other polar solvents such as alcohol.

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3 years ago

Which statements describe homologous structures? Check all that apply. An example of a homologous structure is the wing of a bir

denis23 [38]

An example of a homologous structure is the forelimb of a whale, a human, and a dog. Homologous structures have the same structure, but may have a different function. Homologous structures indicate a common ancestor. A homologous structure is an organ or bone that's in common between different animals that demonstrates an anatomical commonality indicating that the animals share a common ancestor. This is in contrast to analogous structures where two unrelated animals have structures with similar forms or functions due to convergent evolution. With that in mind, let's look at the available options and see what fits. An example of a homologous structure is the wing of a bird and an insect. * This is an example of an analogous structure, so this is a bad choice. An example of a homologous structure is the forelimb of a whale, a human, and a dog. * Exactly. This is a good example of a homologous structure, so this is a good choice. Homologous structures have the same function but a different structure. * False. This is a type of analogous structure. Homologous structures have the same structure, but may have a different function. * True. A homologous structure is a structure that was present in a common ancestor of different animals. Further evolution may have caused those animals to diverge and the common structure may now be used for different purposes. So this is a good choice. Homologous structures indicate a common ancestor. * Yes, by definition. Homologous structures do not indicate a common ancestor. * Since the previous option was true, this must be false, so a bad choice.

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4 years ago

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