Answer:
0.029N
Explanation:
Pressure = displacement × density of steel × acceleration due to gravity
displacement = 0.1in = 0.1×0.0254m = 0.00254m, density of steel = 7900kg/m^3, acceleration due to gravity = 9.8m/s^2
Pressure = 0.00254×7900×9.8 = 196.65N/m^2
Force(P) = pressure × area
Area of 1 pin-connected A-36 steel member = 0.75in^2 = 4.84×10^-6m^2
Area of 3 pin-connected A-36 steel member = 3×4.84×10^-6 = 1.452×10^-5m^2
Force(P) = 196.65 × 1.4652×10^-5 = 0.0029N
A project that requires using a pleater, a ruffling foot, or a gathering foot is the creation of a dress.
A pleater, a ruffling foot, and a gathering foot are all accessories for sewing machines or machines themselves that help fashion designers to give the fabric a different shape or texture, and therefore create unique pieces.
- Pleater: This tool includes multiple needles that go through the fabric to create multiple pleats
- Ruffling foot: This is usually an accessory for sewing machines to create ruffles
- Gathering foot: This tool is used to create gathers in fabric, these differ from ruffles because they are smaller and more subtle than ruffles
All of the tools can be used in the creation of a dress, for example, a pleater can be used in the top section of the dress to give it a nice texture and make it different from the skirt. In the same way, others such as the ruffling foot or the gathering foot can be used in the sleeves of the dress.
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The 95% confidence interval for the true proportion moth eggs parasitized by the wasps is;
CI = (0.5459, 0.7341)
We are given;
Sample size; n = 100
Number of successes in the sample; x = 64
Now, formula for estimated proportion of success is; p = x/n
p = 64/100
p = 0.64
Formula for confidence interval of proportions is;
CI = p ± z√(p(1 - p)/n)
Where z is the critical value at the confidence level.
From tables, at 95% CL, critical value z = 1.96
Thus;
CI = 0.64 ± 1.96√(0.64(1 - 0.64)/100)
CI = 0.64 ± 0.0941
Thus;
CI = (0.64 - 0.0941), (0.64 + 0.0941)
CI = (0.5459, 0.7341)
Read more about confidence interval at;brainly.com/question/17042789
