The law of conservation of mass is called a mass or a material balance.
Mass In = Mass Out + Mass Stored
Raw Materials = Products + Wastes + Stored Materials.
ΣmR= ΣmP + ΣmW + ΣmS
(where Σ(sigma) denotes the sum of all terms).
ΣmR = ΣmR1 + Σ mR2 + ΣmR3 = Total Raw Materials
ΣmP = ΣmP1 + Σ mP2 + ΣmP3 = Total Products
ΣmW = ΣmW1 + Σ mW2 + ΣmW3 = Total Waste Products
ΣmS = ΣmS1 + Σ mS2 + ΣmS3 = Total Stored Products.
Raw Materials = Products + Waste Products + Stored Products + Losses
Energy In = Energy Out + Energy Stored
ΣER = ΣEP + ΣEW + ΣEL + ΣES
ΣER = ER1 + ER2 + ER3 + . = Total Energy Entering
ΣEP = EP1+ EP2 + EP3 + . = Total Energy Leaving with Products
ΣEW = EW1+ EW2 + EW3 + = Total Energy Leaving with Waste Materials
ΣEL = EL1+ EL2+ EL3 + . = Total Energy Lost to Surroundings
ΣES= ES1+ ES2+ ES3 + . = Total Stored Energy in the process
If force on a system is zero then:
initial momentum = final momentum
m * v = constant
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