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5 Cards in this Set
- Front
- Back
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Total energy is: |
The sum of kinetic, potential and internal energies combined. |
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The formula for E is: |
E = Ek + Ep + U |
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Note:
1) As Ep can be negative? |
Theoretically, the total energy can also be negative. |
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When dealing with E:
1) We commonly focus on? 2) We do this by using? |
1) Whether energy has been gained, lost, or maintained.
2) ΔE. |
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Understanding ΔE:
1) When ΔE 2) When ΔE = 0? 3) When ΔE > 0?
- Note... |
1) Energy has been lost by the object and gone to the surroundings.
2) The net energy has stayed the same. (Though individual energies may have changed)
3) Energy has been gained by the object from the surroundings.
- we always use |ΔE| so if the change is -1J, then 1J of energy is transferred. |
