Making the lumber thick will make it stiff, which seems good. On the other hand, with thicker lumber, differences in expansion on the two faces have more leverage to make the lumber move.

7 0

3 years ago

Help pls i need this right now

Nady [450]

Answer:

115.3 is the direction of the vector. Just learned some physics to get this answer over the past 3 hrs

4 0

3 years ago

As a bicycle pump inflates a tyre, it pressure rises from 30 kPa to 40 kPa at constant temperature of 30 °C. By assuming the air

MArishka [77]

This question involves the concepts of work done, pressure, and temperature.

The work done per mol of the air is "-724.71 J/mol".

Using the given formula for work done:

$W=RTln\frac{P_1}{P_2}$

where,

W = work done per mol = ?

R = universal gas constant = 8.314 J/mol.k

T = absolute temperature = 30°C + 273 = 303 k

P₁ = initial pressure = 30 KPa

P₂ = final pressure = 40 KPa

Therefore,

$W= (8.314\ J/mol.k)(303\ k)ln\frac{30\ KPa}{40\ KPa}\\$

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Learn more about pressure here:

brainly.com/question/23358029?referrer=searchResults

7 0

3 years ago

21/33

postnew [5]

Answer:

400N

Explanation:

5 0

3 years ago