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3 years ago

Why the colours of many Airplane are white?

Engineering

1 answer:

son4ous [18]3 years ago

4 0

So the airplanes can blend in with the clouds

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2. What is the main job of a cylinder head?

Anna11 [10]

Answer:

Explanation:

The cylinder head sits on the engine and closes off the combustion chamber. The gap that remains between the cylinder head and the engine is completed by the head gasket. Another task of the cylinder head is to ensure the constant lubrication of the cylinder

3 0

3 years ago

Tires can be recycled instead of thrown out.<br> True<br> False

Arisa [49]

Answer:

True :)

Explanation:

You can recycle it! Tire recycling is the most practical and environment-friendly way of disposing of old and worn-out tires. Due to their inherent durability, large volume and environment and health risks, tires are one of the most problematic sources of solid wastes.

Hope it helped have a nice day! :)

8 0

3 years ago

A 60-kg woman holds a 9-kg package as she stands within an elevator which briefly accelerates upward at a rate of g/4. Determine

Anuta_ua [19.1K]

Answer:

force R = 846.11 N

lifting force L = 110.36 N

if cable fail complete both R and L will be zero

Explanation:

given data

mass woman mw = 60 kg

mass package mp = 9 kg

accelerates rate a = g/4

to find out

force R and lifting force L and if cable fail than what values would R and L acquire

solution

we calculate here first reaction R force

we know elevator which accelerates upward

so now by direction of motion , balance the force that is express as

R - ( mw + mp ) × g = ( mw + mp ) × a

here put all these value and a = g/4 and use g = 9.81 m/s²

R - ( 60 + 9 ) × 9.81 = ( 60 + 9 ) × g/4

R = ( 69 ) × 9.81/4 + ( 69 ) 9.81

R = 69 ( 9.81 + 2.4525 )

force R = 846.11 N

and

lifting force is express as here

lifting force = mp ( g + a)

put here value

lifting force = 9 ( 9.81 + 9.81/4)

lifting force L = 110.36 N

and

we know if cable completely fail than body move free fall and experience no force

so both R and L will be zero

5 0

3 years ago

Most licensed architects are members of which association?

olga2289 [7]

Answer:

The ALA, or Association of Licensed Architects. Hope this helps.

Explanation:

7 0

3 years ago

Read 2 more answers

Estimate the theoretical fracture strength of a brittle material if it is known that fracture occurs by the propagation of an el

aksik [14]

Answer:

48087.5MPa

Explanation:

The formula for this is

σ = 2σo√L/R

Using the information below we can solve this problem

Crack length L = 0.37mm

Radius R = 0.001 = 1x10^-3

Stress σo = 1250MPa

When we insert values into the formula

σ = 2(1250)√0.37/0.001

= 2(1250)√370

= 2(1250)(19.235)

= 48087.5 Mpa

This is therefore the theoretical fracture strength of the brittle material.

4 0

3 years ago

Why the colours of many Airplane are white?​

Why the colours of many Airplane are white?