Question

What is the formula for energy?

Answer 1

energy is in different forms..there is no definite formula for it.
you should know what energy actually is. you should get the feel for different forms of energy.

Answer 2

it tends to be E=mc^2

Answer 3

thanks

Answer 4

np

Answer 5

:)

Answer 6

although, there are different forms of energy with different equations.

Answer 7

:)

Answer 8

force times distance

Answer 9

energy has usually being most represented by kinetic and potential energy

Answer 10

force times distance ? i dont understand!!

Answer 11

Fxd?

Answer 12

the strength of an object/force and how far it goes

Answer 13

so what is the unit|?

Answer 14

There are a couple depending on the type of energy. Here are some common ones:
\[E = mc^2\]
\[E = hf \] h is Planck's constant
\[E = \frac{ mv^2 }{ 2 }\] kinetic energy
\[E = mgh \] Gravitational potential energy
\[E = Pt\] Power and time relation.

Answer 15

Thanks :D

Answer 16

can i know the unit?

Answer 17

Standard unit is the joule (J). We can write it like this though.\[E = work = force \times distance -> 1J = 1Nm\]

Answer 18

Or in electrical terms 1 J = 1VC (volt coulomb) since potential difference (V) is work (J) done to separate a unit charge (C)

Answer 19

in mechanics there is the work energy principle :

final energy = initial energy + work done by driving force - work done against resistance