Calculate the change in energy of one component in a system when the change in other components and energy flows are known (HS-PS3-1).
Define the energy changes (ΔE) for components in a 3-part system. The total change in system energy must equal the energy transferred in/out.
Positive = Energy added to system. Negative = Energy lost to surroundings.
Find the change in Thermal Energy (ΔEt) to balance the system:
Total ΔEsystem = Ein/out
ΔEk + ΔEg + ΔEt = Eflow
1. 100 + (-50) + ΔEt = 0
2. 50 + ΔEt = 0
3. ΔEt = -50 J