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3 years ago

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Engineering

1 answer:

hoa [83]3 years ago

3 0

Answer:

Engineering is the use of scientific principles to design an build machines, structure, an other item including bridges, tunnels, road etc

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Problem: design the following rectangular floor beam for a building.

sammy [17]

Answer:

Area required = 9.5 ft²

Explanation:

Step by step explanation is given in the attached document.

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4 years ago

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Tech A says never use a water hose to clean up dust after a repair. Tech B says never use a floor scrubber to clean up dust afte

DENIUS [597]

Answer:

Tech B

Explanation:

You ruin your mop that way. it will clump up and than you'll have a mud mess.

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4 years ago

Two vertical, parallel clean glass plates are spaced a distance of 2mm apart. if the plates are placed in water, how high will t

Ulleksa [173]

Answer with Explanation:

The capillary rise in 2 parallel plates immersed in a liquid is given by the formula

$h=\frac{2\sigma cos(\alpha )}{\rho gd}$

where

$\sigma$ is the surface tension of the liquid

$\alpha$ is the contact angle of the liquid

$\rho$ is density of liquid

'g' is acceleratioj due to gravity

'd' is seperation between thje plates

Part a) When the liquid is water:

For water and glass we have

$\sigma =7.28\times 10^{-2}N/m$

$\alpha =0$

$\rho _{w}=1000kg/m^3$

Applying the values we get

$h=\frac{2\times 7.28\times 10^{-2}cos(0)}{1000\times 9.81\times 2\times 10^{-3}}=7.39mm$

Part b) When the liquid is mercury:

For mercury and glass we have

$\sigma =485.5\times 10^{-3}N/m$

$\alpha =138^o$

$\rho _{w}=13.6\times 10^{3}kg/m^3$

Applying the values we get

$h=\frac{2\times 485.5\times 10^{-3}cos(138)}{13.6\times 1000\times 9.81\times 2\times 10^{-3}}=-2.704mm$

The negative sign indicates that there is depression in mercury in the tube.

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3 years ago

Now that we have a second enemy, you will need to make some changes to the script that is attached to your backdrop. Look at tha

JulsSmile [24]

Answer:

Explanation:

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3 years ago

Describe two components of the MEDC mechanized agricultural system that may lead to an increase in water stress

Zina [86]

Mechanized agriculture refers to agricultural machinery capable of facilitating and enhancing agriculture. Mechanized agriculture does not require moving the soils and therefore is hard for water to enter into it.

<h3>What is mechanized agriculture?</h3>

Mechanized agriculture refers to the use of different technologies (e.g., precision agriculture GPs) in order to increase farmworker productivity.

Mechanized agriculture is a common practice in developed countries (MEDCs), whereas this practice is relatively uncommon in developing countries (LEDCs).

The techniques of mechanized agriculture do not require moving the soils and therefore is hard for water to enter into it.

Learn more about mechanized agriculture here:

brainly.com/question/1543791

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3 years ago