Question
Asked Dec 23, 2019
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A sample of an unknown material appears to weigh 300. N in air and 200. N when immersed in alcohol of specific gravity 0.700. What are (a) the volume and (b) the density of the material?

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Expert Answer

Step 1
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a) Density and specific gravity are related by, dasse 1000kg/m² apecifio 0.700 = 1000kg/m³ d = 700kg/m²

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Step 2

Equation for net force on sample is,

 

Answer: 0.0146 m3

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F, + Whd - W = 0 pgV +W (700kg/m³)(9.8m/s²)V +200N – 300N = 0 alcchol d - W. = 0 icchel 100 m- 6860 = 0.0146m

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Step 3
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b) Density of material is, W. air W. gV 300N (9.8m/s')(0.0146m³) = 2.1×10° kg/m³

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