Physics, asked by shreyamungara3105, 1 year ago

how do you define joule as the SI unit of energy?


UnknownDude: 1 joule is the amount of energy required to displace a body by 1 m using a force of 1 N
ritesh1278: 1 joule work is work done by 1 newton force and pushes a object 1 m
ritesh1278: correct unknown dude
shreyamungara3105: You're supposed to be defining it in terms of it being used as the SI unit of energy and not work....what you two answered is related to work
shreyamungara3105: No I'm sorry you're right
shreyamungara3105: I didn't read the whole thing
shreyamungara3105: I didn't read the whole thing
shreyamungara3105: I didn't read the whole thing
shreyamungara3105: I didn't read the whole thing
UnknownDude: Da.mn dude, no need to say it 4 times

Answers

Answered by Zayer
3
Hey mate here is your answer...
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We know from the work-energy theorem, that:

[math]\Delta E = W[/math]

(Change in energy equals to work)

We know that work is defined as “force multiplied by displacement”. So we can substitute this into the equation.

[math]\Delta E = \vec{F} \cdot \vec{d}[/math]

(Change in energy equals to force times displacement)

This is the tricky part. When we equate two expressions, we are saying that they share the same dimensions (same units). The SI unit for force is Newtons, and the SI unit for displacement is Meters. Therefore, the unit of energy and work is Newton-meters. We define 1 Newton-meter as 1 joule. This is how the unit of energy is derived...

TS Zayer.

shreyamungara3105: Sorry but I'm still in 9th grade and we haven't been taught to do it using delta
talibbeiggcet: Mai toh 12 th Mai hoo maine b nhi suna aisa kuch
shreyamungara3105: You really mean it or is it in a sarcastic way?
ritesh1278: delta means change i am in class 9 and i know
Answered by talibbeiggcet
0
the amount of energy required when a force of 1 Newton is applied on a body so that it moves a distance of 1 metre is equal to 1 joule
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