Answer to Question #255103 in Molecular Physics | Thermodynamics for PUMAH LUTRA

Question #255103
The following are the dimensions of a metallic plate ; Length = 15.6= 0.1cm, Width = 5.51= 0.02cm, thickness =0.84= 0.01cm and mass = 12.512= 0.001g. Calculate the density of the plate and indicate the order accuracy.
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Expert's answer
2021-10-24T18:25:30-0400

L=0.1  cmW=0.02  cmT=0.01  cmm=0.001  gV=LWTV=0.1×0.02×0.01=2.0×104  cm3Density=ρ=mV=0.0012.0×104=5.0  g/cm3L=0.1 \;cm \\ W = 0.02 \;cm \\ T = 0.01 \;cm \\ m= 0.001 \;g \\ V = LWT \\ V = 0.1 \times 0.02 \times 0.01 = 2.0 \times 10^{-4} \;cm^3 \\ Density = ρ = \frac{m}{V} = \frac{0.001}{2.0 \times 10^{-4}} = 5.0 \;g/cm^3


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