Which explanation best compares the movement of particles in the three states of matter
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Particles in a solid state can only vibrate. In a liquid state, they slide against each other. And in a gas state, they move freely, bouncing and bumping into each other.
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What is the difference between a carbohydrate and a cholesteral
A hollow tube that holds the eyepiece lens and or mirrors
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As the astronaut moved away from Earth, the gravitational force between Earth and the astronaut will decrease.
What is the gravitational force?
The gravitational force can be described as a force that attracts any two objects having mass. The gravitational force is an attractive force because it always tries to pull masses together, it never pushes objects apart.
In the universe, each object with mass attracts every other object with a certain force, and that attraction force is directly proportional to the product of the masses of those objects.
The objects that are far apart from each other, don't pull on each other but the force is there and we can calculate it from the Gravitational Force Formula,
F = Gm₁m₂/r²
Where F is the gravitational force between two objects, m₁ is the mass of the first object, m₂ is the mass of the second object and 'r' is the distance between the centers of two objects.
The earth pulls everything towards itself because of the gravitational force. As the astronaut moved away from the earth the influence gravitational force of the earth or gravity will decrease.
Learn more about gravitational force, here:
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Answer : The correct formula of the given compound will be,
Explanation :
Calcium chloride is an ionic compound because calcium element is a metal and chloride element is a non-metal. The bond formed between a metal and a non-metal is always ionic in nature.
The nomenclature of ionic compounds is given by:
1. Positive ion is written first.
2. The negative ion is written next and a suffix is added at the end of the negative ion. The suffix written is '-ide'.
The charge on calcium is (+2) and the the charge on chloride is (-1). The charges are not balanced. Thus they combine and their charges are exchanged and written in simplest whole number ratios to give neutral .
Hence, the formula of the compound calcium chloride will be
sufficient supply of oxygen
B.
insufficient supply of carbon dioxide
C.
sufficient supply of carbon dioxide
D.
insufficient supply of oxygen
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Answer:
D. insufficient supply of oxygen
Explanation:
Combustion is an exothermic reaction which involves the burning of a compound in the presence of oxygen. Combustion is a very useful life process as it produces heat and light.
For a complete combustion reaction to occur, the compound must be burnt over excess oxygen. The product is usually carbondioxide and water with release of some particulate matter.
In incomplete combustion, there is deficiency of oxygen. Here, oxygen becomes the limiting agent and it drives the reaction to an end. Incomplete combustion is always accompanied with the production of poisonous carbon monoxide and Carbon. We see incomplete combustion when smoke forms or when burning is accompanied by production of soot.
What makes a combustive process complete or not is the availability of oxygen gas for the reaction.
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We have our formula for potential energy, which we are trying to solve for,
PE = mgh or potential energy = mass * gravity * height
So we know that PE all depends on these.
Height : 30 meters
Mass : 25 kg
Gravity (which is always constant) : 9.8 m/s/s
Now add into formula.
PE = 25*30*9.8
PE = 7350 Joules
Answer: PE = 7350 Joules
Now calculate speed:-
7,350 joules/12.5 kg = speed-squared
588 m²/s² = speed-squared
about 24.248 m/s