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Yuliya22 [10]
4 years ago
10

Why does paper feel different after it has been wet and dried?

Physics
1 answer:
dsp734 years ago
7 0
"in the paper making process, the pulp is strained to create the initial textured/brittle paper, but the process doesn't end there. The textured paper must be put through high pressured steam rollers to create the smooth paper you've come to know. This setting process causes all the fibers to be pressed flat and packed together evenly on the surface. When paper gets wet, it "unsets" itself, breaking up the tension that held the fibers together, again causing the uneven texture it initially had." Got this from reddit
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Which is an example of a mixture?
fgiga [73]
The answer is: B. Trail Mix
7 0
3 years ago
Read 2 more answers
A force of 100 N is applied to a crate at an angle of 60° to the horizontal surface.
ad-work [718]

Answer:

100 J

Explanation:

Given:

Force acting on the crate is, F=100\ N

Displacement of the crate is, S=2\ m

Angle between the direction of force and displacement is, \theta=60\°

Now, work done by a force 'F' causing a displacement 'S' such that the angle between the force and displacement is \theta is given as:

Work=F\times S\times \cos\theta

Now, plug in 100 N for 'F', 2 m for 'S', and 60° for \theta. This gives,

Work=(100\ N)(2\ m)(\cos(60))\\\\Work=(200\times 0.5)\ \textrm{N-m}\\\\Work=100\ J

Therefore, the work done by the force is 100 J.

8 0
4 years ago
El concepto cosmológico abarca todo lo relativo a la cosmología y, al unir este término con la metafísica sería posible una corr
Solnce55 [7]

La respuesta correcta para esta pregunta abierta es la siguiente.

No incluyes opciones, incisos, o alguna referencia específica para responder esta pregunta.

De ahí que responderemos en términos generales basándonos en nuestro conocimiento previo.

El concepto cosmológico abarca todo lo relativo a la cosmología y, al unir este término con la metafísica sería posible una correcta asociación la cual sería benéfica para ambos campos de conocimiento porque de esta manera se estarían complementando y enriqueciendo el uno al otro.

Cuando la ciencia -en este caso, la cosmología- acepte los conceptos metafísico que no tienen un sustento científico pero que sí contemplan alternativas en el mundo espiritual que son aceptadas por una innumerable cantidad de personas, entonces los expertos podrán plantear nuevas y diferentes posibilidades de entender los fenómenos que al día de hoy, carecen de una convincente explicación.

Tanto la cosmología como la metafísica podrían mostrarse más receptivos a las aportaciones de una y la otra, con objeto de poder aumentar las posibilidades de comprender un fenómeno. No necesariamente debe haber una teoría científica para poder avanzar en el conocimiento de algún tema. De ahí que las aportaciones metafísicas sean válidas como una alternativa de investigación.

5 0
3 years ago
Do all planetary systems look the same as our own?
Svet_ta [14]

Answer:

No

Explanation:

A planetary system consists of at least one star and non stellar objects revolving around it.

Our solar system has one star around which there are 8 planets. However there are star systems with more than one star. These systems are called binary systems. The size of stars also vary. They also vary by orbital configuration i.e, the planets have higher eccentricity than our solar system's. The planetary systems are also classified on the basis of the number of planets in them.

So, all planetary systems do not look the same as our own.

4 0
3 years ago
Which best describes the definition for the atomic mass of an element?
kipiarov [429]

Answer:

It is a weighted average of the masses of an element’s isotopes.

Explanation:

The best definition of the atom mass of an element is that it is a weighted average of the masses of an element's isotopes.

  • Isotopes of an element have the same electronic configuration but differ in only their masses.
  • The atomic mass of an element can be derived from the geonormal abundances of this isotopes.
  • It is the average of all the isotopes of an element.

 Atomic mass  = ∑m_{i} a_{i}

where m_{i} is the mass of the isotope i

            a_{i} is the abundance of the isotope i

6 0
4 years ago
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