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son4ous [18]
3 years ago
13

For every 3 packages that Marcella wraps she uses 1/2 of a roll of wrapping paper if she uses 2 1/2 rolls of wrapping paper how

many packages has she wrapped
Engineering
2 answers:
Tju [1.3M]3 years ago
7 0

Answer:

The answer is 15 packages

Explanation: 1/2 = 3packages in total she has 2 1/2. So 1/2+ 1/2 = 3 + 3= 6

then again we do 1/2 + 1/2 = 3 + 3 = 6 + 6 = 12 and then since it is 2 1/2 we add 3 again so 12 + 3 = 15 packages

hram777 [196]3 years ago
6 0
She wrapped 5 packages
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Acoke can with inner diameter(di) of 75 mm, and wall thickness (t) of 0.1 mm, has internal pressure (pi) of 150 KPa and is suffe
NemiM [27]

Answer:

All 3 principal stress

1. 56.301mpa

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3. 0mpa

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Explanation:

di = 75 = 0.075

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internal pressure pi = 150 kpa = 150 x 10³

torque t = 100 Nm

finding all values

∂1 = 150x10³x0.075/2x0,0001

= 0.5625 = 56.25mpa

∂2 = 150x10³x75/4x0.1

= 28.12mpa

T = 16x100/(πx75x10³)²

∂1,2 = 1/2[(56.25+28.12) ± √(56.25-28.12)² + 4(1.207)²]

= 1/2[84.37±√791.2969+5.827396]

= 1/2[84.37±28.33]

∂1 = 1/2[84.37+28.33]

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∂2 = 1/2[84.37-28.33]

= 28.07mpa

This is a 2 d diagram donut is analyzed in 2 direction.

So ∂3 = 0mpa

∂max = 56.301-28.07/2

= 14.116mpa

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