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Bingel [31]
3 years ago
13

Hỗ trợ mình với được không các bạn

Engineering
1 answer:
Leya [2.2K]3 years ago
6 0

Answer:

Explanation:

Be bop

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How is air pressure affected by the shape of an aircraft wing
oksano4ka [1.4K]

Answer:

Airplanes' wings are curved on top and flatter on the bottom. That shape makes air flow over the top faster than under the bottom. As a result, less air pressure is on top of the wing. This lower pressure makes the wing, and the airplane it's attached to, move up.

Explanation:

3 0
3 years ago
THEME: What is the impact of technology on architecture?
abruzzese [7]

Answer:

With increased technological knowledge and consequent decreased factors of ignorance, the structures have less inert masses and therefore less need for such decoration. This is the reason why the modern buildings are plainer and depend upon precision of outline and perfection of finish for their architectural effect.

8 0
4 years ago
You are to assess the biomechanics of a male’s arm using his bicep to hold a 20 kg object in his hand. The upper arm is perpendi
cestrela7 [59]

Answer:

Explanation:

The detailed analysis, with free body diagram and step by step calculations with appropriate substitution is as shown in the attached files.

5 0
4 years ago
What is a heat engine? State its efficiency (a sketch would be appropriate).
dimulka [17.4K]

Answer:

\eta =\dfrac{Q_1-Q_2}{Q_1}

Explanation:

Heat engine

 Heat engine is a device which produce work while consuming some amount of energy .This engine works in cycle.In other words we can say that Heat engine is a device which covert thermal or chemical energy in to mechanical energy and after that this mechanical energy can be use for producing mechanical work.

Heat engine takes heat from high temperature and rejects heat to lower temperature and producing work.

We know that efficiency given as

\eta =\dfrac{out\ put}{in\ put}

From diagram we can say that

Q_1=Q_2+W

So efficiency

\eta =\dfrac{w}{Q_1}

\eta =\dfrac{Q_1-Q_2}{Q_1}

3 0
3 years ago
Telnet into a Web server and send a multiline request message. Include in the request message the If-modified-since: header line
KiRa [710]

Answer:

The following command is issued

in Windows command prompt

followed by the HTTP GET

message to the “utopia.poly.edu"

web server:

> telnet utopia.poly.edu 80

As the index.html page in the web

server was not modified since

Mon, 18 May 2015 09:23:34GMT,

the following outputwas displayed

when the above commands were

issued on Sat, 23 May 2015.

The first 4 lines are the GET

message and header lines input by

the user.

The next 4 lines (starting from

HTTP/1.1 304 Not Modified) are

the response from the web server.

Explanation:

File is also attach which might help to explain the answer.

5 0
3 years ago
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