ashrambhattarai ashrambhattarai

18-11-2018
Mathematics

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10m cubed of air weigh 13 kg.The weight of air is directly proportional to its volume. Find the constant of variation; it is called density

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jimrgrant1 jimrgrant1

18-11-2018

k = 1.3

let the weight be w and volume be V, then

since weight is directly proportional to volume

w = kV ← k is the constant of variation, hence

k = [tex]\frac{w}{V}[/tex]

using the given condition, then

k = [tex]\frac{13}{10}[/tex] = 1.3

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