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3 years ago

13

The student makes a single pile of the 500 sheets of paper. Which a metre rule, she measured the height of the pile. The height

of the pile is 0.048 m. Calculate the density of the paper.

1 answer:

Cerrena [4.2K]3 years ago

6 0

Answer: please see attached work.

Explanation: please see attached work. Assuming 500 sheets of paper = 20 lb. (typicical value).

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In aircraft design, the pressure coefficient Cp is usually measured during wind tunnel testing of an aircraft component to predi

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Answer:

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2 years ago

The speed at which a light aircraft can take off is 120 km/h. (A) What is the minimum constant acceleration required for the pla

kondor19780726 [428]

Answer:

A) a = 2.31[m/s^2]; B) t = 14.4 [s]

Explanation:

We can solve this problem using the kinematic equations, but firts we must identify the data:

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Vi= initial velocity = 0, because the plane starts to move from the rest.

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$v_{f} ^{2} =v_{i} ^{2}+2*g*dx\\where:\\v_{f}=120[\frac{km}{h} ]*\frac{1hr}{3600sg} * \frac{1000m}{1km} =33.33[m/s]\\\\Replacing\\33.33^{2}=0+2*a*(240)\\ a=\frac{11108.88}{2*240}\\ a=2.31[m/s^2]\\$

To find the time we must use another kinematic equation.

$v_{f} =v_{i} +a*t\\replacing:\\33.33=0+(2.31*t)\\t=\frac{33.33}{2.31}\\ t=14.4[s]$

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3 years ago

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3 years ago