Why the water drops were difficult to split apart but easy to join together?

Answers

Answer 1

Answer: They have large cohesion: the attraction between particles of the same material.

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HURRY!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!One object has a speed of 1 mph and another object has a speed of 3 mph. If the masses are the same, which of the following is true about their kinetic energy?

Question 7 options:

Their speeds are the same.

the object with the greater speed has greater kinetic energy

the object greater speed has the lower kinetic energy

the object with the smaller mass has the greater kinetic energy

Answers

Answer: Option (B) is the correct answer.

Explanation:

Kinetic energy is the energy due to the motion of an object.

Mathematically, K.E = $(1)/(2)mv^(2)$

where m = mass

v = velocity

Therefore, an object whose velocity is more will have more kinetic energy.

Thus, we can conclude that out of the given options, the object with the greater speed has greater kinetic energy is true about their kinetic energy.

The object with the greater speed has greater kinetic energy

Our solar system consists of the sun, planets, moons, asteroids, rock particles, dust, and gases that orbit the sun. From a scientific perspective, which makes the solar system a system?

Answers

A solar system is made up of objects that interact with one another

The sun and planets makes our solar system

Why does methane have a low boiling pint?

Answers

Methane is an alkane. Alkanes are composed of a number of carbons (denoted by the prefix on the chemical name, e.g. meth-ane, eth-ane, prop-ane, but-ane...) which are saturated with hydrogen atoms (the largest number of hydrogens possible are bound to them). Methane has one carbon, which is saturated with 4 hydrogen atoms - this means that the chemical formula is CH4 (where the 4 should be subscript, but I can't work it out in this text field).

The boiling point depends on the strength of the intermolecular forces between each molecule - as the length of the molecule increases, so does the force of attraction between them because there are more points to attract together. Methane has a very short chain length of only 1 carbon, so the intermolecular forces are very weak. Because the forces are weak, very little energy is required to overcome them to allow the substance to become gaseous (gas molecules spread out to fill any space, requiring a negligible strength of intermolecular forces).

Consequently the boiling point of methane is so low that it is found in gaseous form almost all of the time on Earth - however Titan, one of the moons of Saturn, has seas of methane on its surface, because it is so cold there that it is possible for methane gas to condense into liquid.

In order to consider the boiling point of a substance, we need to think about the forces holding the molecules together. Because methane (CH4) is a non-polar molecule the molecules are held together only by London Dispersion Forces which are very weak and easy to break. These bonds break when methane boils and because they are weak, it boils at a low temperature.

What is the formula for hemoglobin?

Answers

Hemoglobin is a globular protein, an natural organic polymer. It doesnt have an exact formula, rather it has but good luck writing it down. The empiric formula is C738H1166N812O203S2Fe It is built up by amino acids with a Fe ion in its core. Good Luck on your assignmment!!

C2952 H4664 O832 N812 S8 Fe4

I’m which of the following kingdoms are prokaryotes found?i need help ASAP please help

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Don’t Put this as your answer

Can anyone please help answer this chemistry question?

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The chemical formula of benzene is C6H6, so it has six carbon (C) atoms and six hydrogen (H) atoms. Its chemical structure can be described as a hexagon ring with alternating double bonds, as shown in this illustration. The chemical structure of benzene shows that for each carbon atom, there is one hydrogen atom.

Please give me more details so I can help you

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