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diamong [38]
4 years ago
11

The temperature at which all molecular motion stops is known as: a) Absolute temperature b) molecular temperature c) absolute ze

ro d) Molecular zero e) none of these.
Engineering
1 answer:
Naya [18.7K]4 years ago
6 0

Answer:

c) absolute zero

Explanation:

The fourth principle of thermodynamics posed by the Romanian economist Nicholas Georgescu-Roegen, explains the presence of absolute zero is said that at this temperature the internal molecular movement becomes zero making the internal energy (U) zero, absolute zero is equivalent to -273.15C or 0Kelvin

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Welding never causes residual stresses in the work piece, which may result in distortion stress corrosion cracking, and reduced
umka21 [38]

Answer:

False.

Explanation:

Welding due to the thermal stress caused by the piece and large temperature changes can cause residual stresses in the material due to the efforts that are manifested in it. These efforts can cause microfractures, weakened areas and also a stress and changes in the crystalline structure that does not allow it to maintain the initial properties of the material and be prone to subsequent failures and corrosion.

7 0
3 years ago
Hydrogen gas (density = 1.165 kg/m^3 ) is stored at 25°C in a permeable cylindrical container which has an outer diameter of 0.2
AVprozaik [17]

Answer:

6.007 x 10^(-14) kg/s

Explanation:

4 0
3 years ago
Congress can pass laws concerning ___. (Select all that apply.)
Dovator [93]

Answer: What laws can Congress pass?

What Congress Does

Make laws.

Declare war.

Raise and provide public money and oversee its proper expenditure.

Impeach and try federal officers.

Approve presidential appointments.

Approve treaties negotiated by the executive branch.

Oversight and investigations.

Explanation:

6 0
3 years ago
A Carnot machine operates with 25% efficiency, whose heat rejection reservoir temperature is 300K. Determine the temperature at
alisha [4.7K]

Answer:

The temperature at which observed heat is 400 K

Explanation:

Given data:

rejection reservoir temperature at exit T_{L} is 300 k

the efficiency of a engine is  η = 25%

we know that efficiency of Carnot is given as

\eta = (1-\frac{T_{L}}{T_{H}})*100

Putting all value to obtained  temperature at which observed heat

0.25 = (1-\frac{300}{T_{H}})

T_{H} = 400 K

5 0
3 years ago
Let S = { p q |p, q are prime numbers greater than 0} and E = {0, −2, 2, −4, 4, −6, 6, · · · } be the set of even integers. . Pr
Finger [1]

Answer:

prove that | S | = | E | ; every element of S there is an Image on E , while not every element on E has an image on S

Explanation:

Given that S = { p q |p, q are prime numbers greater than 0}

                    E = {0, −2, 2, −4, 4, −6, 6, · · · }

To prove  by constructing a bijection from S to E

detailed  solution attached below

After the bijection :

<em>prove that | S | = | E |</em> :  every element of S there is an Image on E , while not every element on E has an image on S

∴ we can say sets E and S are infinite sets

7 0
3 years ago
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