Chemistry, 20.04.2020 03:00 queenmari49

What do you need to know about potential energy and Kinetic energy

Answers: 1

Show answers

Answers

Answer from: burners

Explanation:

Energy can neither be created nor it can be destroyed. Potential energy is the energy in a body due to its position. While kinetic energy is the energy in a body due to its motion. The formula for potential energy is mgh, where m stands for mass, g stands for gravitational acceleration and h stands for height.

Kinetic energy can be transformed into potential energy in some type of way!

Answer from: king6757

They can be transferred very easily between both forms by moving up and down slopes.

Potential Energy is usually in the form gravitational potential energy which is represented by the equation

Where m is the mass of the object, h is the height in metres from the ground and g is the acceleration due to gravity. Often quoted as , but later on you may get told to use as a value for it instead.

Kinetic Energy is energy that any moving object has, and can be represented by the equation

Where m is the mass of the object, and v is the velocity it is moving at.

If you want to see how high an object with a certain amount of kinetic energy can move upwards, then you can set

and solve for h (often you are given a starting value for your velocity)

So you can do,

Here you can see that the mass of the object doesn't matter at all! And the height it can move up by only depends on how fast it is moving.

Hope this helps!

Answer from: Quest

i can ! i just need to know what the paragraph is! : p

Answer from: Quest

answer : third trial had the contaminated sample and the correct value for dhrxn should be 1000 kj/mol

explanation :

let us write down the given equations

equation 1 : $4x (s) + 3o_{2} (g) \rightarrow 2x_{2}o_{3} (s) h rxn = -600 kj/mol$

equation 2 : $2x (s) + 3cl_{2} (g) \rightarrow 2xcl_{3} (s) h rxn = -800 kj/mol$

equation 3 : $4xcl_{3} (s) + 3o_{2} (g) \rightarrow 2x_{2}o_{3} (s) + 6cl_(2} h rxn = -200 kj/mol$

let us use hess's law to find out which 2 equations can be added to get the third equation.

let us reverse equation 2 and multiply it by 2. the new equation that we get is,

equation 4 : $4xcl_{3} (s) \rightarrow 4x (s) + 6cl_{2} ( h rxn = (+800) \times 2 kj/mol$

let us add equation 1 & 4

$4x (s) + 3o_{2} (g) \rightarrow 2x_{2}o_{3} (s) h rxn = -600 kj/mol$

$4xcl_{3} (s) \rightarrow 4x (s) + 6cl_{2} ( h rxn = (+1600) kj/mol$

$4xcl_{3} )s) + 3o_{2} \rightarrow 2x_{2}o_{3} (s) + 6cl_{2} (g) h rxn = (+1000) kj/mol$

the above equation is similar to equation 3 but has different value for dhrxn.

therefore third trial had the contaminated sample and the correct value for dhrxn should be 1000 kj/mol

Another question on Chemistry

Chemistry, 22.06.2019 07:30

Free answer. the treaty of versailles ended world war i, but some of the terms of the treaty contributed to the beginning of world war ii. which was one of the terms of the treaty? the answer would be "germany was forces to pay reparations to the allied countries.". i hope this .

Answers: 1

Answer

Chemistry, 22.06.2019 11:00

Hey can you me with this i really need y’all

Answers: 1

Answer

Chemistry, 22.06.2019 19:10

How does the atmosphere to make earth livable? check all that apply. causes the seasons contains oxygen provides warmth creates important nutrients blocks harmful energy from the sun plz like !

Answers: 2

Answer

Chemistry, 23.06.2019 00:30

What is bromine+calcium iodide--> calcium bromide +iodine balanced

Answers: 1

Answer

You know the right answer?

What do you need to know about potential energy and Kinetic energy...

Questions