# Notes, abstracts, papers, exams and problems of Physics

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## Physical Exercises

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Six 19.4 moles of ideal gas are in a cylinder fitted at one end with a movable piston. The initial gas temperature is 27.0 ° C and the pressure is constant. As part of a proposed machine design, calculate the final temperature of the gas once it has made 1.75x10 ³ J of work.
n = 6 moles isobaric process
T? = 27 ° C
P = CTE.
W = 1.75 * 10 ³ J
PV = nRT
V? = Vf =

W = P (-)

Pf = P: = P

W = (nRTf - nRT?)

W + nRT? = NRTf

Tf =

Tf =
Tf = 335.24K

19.8
Work done in a cyclic process. a) In Figure 19.8a, consider the closed loop 1 3 2 4 1. This is a cyclical process in which the initial and final states are the same. Calculate the total work done by the system in this process and show that equals the area enclosed by the cycle. b) What... Continue reading "Physical Exercises" »

## Asasd

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(M02)Lunar embasy 1a)F. But...a rocket b)So far...apiece 3a)views b)roaring c)prohibited d)grateful 4a)have bought/but b)signed/with Smile you are camera(M03) 1a)T.And as...growing b)F.If the program...department 3a)implement b)radio c)high d)argue 4a)were/that b)had/what A relative difference (M04) 1a) F."This similarity...chimpanzees"b)F."development and...that now" 3a)link b)skull c)leap forward d)seemingly 4a)If you don´t ask him a question,he won´t speak to you. I´m working from home(M05)1a)F"For the Spanish...reason b)T"Overall,fewer...to do" 3a)choosing b)survey c)opportunity d)switch 4a)have worked/per b)to get/to. Should the State tell...drink?(M06) 1a)F"We eat on...else"b)F"A sociologist...dining table" 3a)enquiry b)almost c)entire... Continue reading "Asasd" »

## Sdeasd

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Mamíferos: Las hembras tienen mamas que producen leche para alimentar a las crías, el cuerpo está cubierto por pelos. La función principal es proteger del frio al animal.
Pelaje: raíz dentro del funículo piloso .Los pelos nuevos sacan los pelos viejos. La glándula sebácea lo hace más flexible el pelo. Lana (largo y fino), cerda (áspero y grueso), vello (suave y corto) y púa (largo y puntiagudo)
La temperatura: Es constante. Si sube o baja la temperatura siempre se mantiene constante.
Hibernación: desciende -10 Cº / Duerme no come y se esconde.
Invernación: baja la temperatura pero un duerme profundamente, come y hace algunas actividades.
La fecundación interna se produce en el ovulo con el esperma.
Sistema digestivo: Boca -faringe-

## Fyq

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valencias:(H,F=1);(CL,BR,I=1357);(O=-2);(S,Se,Te=246);(N=12345);(P=135);(A,Sb,Bi=35);(B=3);(C=24);(Si=4);(Li,Na,K,Rb,Cs,Fr,Ag=1);(Be,Mg,Ca,Sr,Ba,Ra,Zn,Cd=2);(Cu,Hg=12);(Al=3);(Au=13);(Fe,Co,Ni=23);(Sn,Pb,Pt,Ir=24)(Cr=23456);(Mn=23456)

Hidruros volatiles:NH3=amoniaco;N2H4=hidrazina;PH3=fosfina;P2H4=difosfina;AsH3=arsina;As2H4=diarsina;SbH3=estibina;CH4=silano;Si2H6=disilano;BH3=borano;B2H6=diborano.

## A body is placed in a certain airstream

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FORCE:

.Any cause with the ability to: modify the state of a
body ( motion vs rest) and deform a body
1.1 Its effects produced depends on: the intensity,
the point where the force is applied and the
direction and sense
INERTIA:
.It's the property of the matter to tend to remain
on its state of motion or rest. If a body is resting, it
will continue so eternally unless a force is applied.
EQUILIBRIUM ALTERATION:
Different forces manage bodies to achieve or lose
equilibrium. Equilibrium types: stable: a slight
equilibrium. Unstable: a slight disturbance leads to an
increasing departure from the equilibrium. Neutral: A
disturbance simply moves the object to a new position.

## Time of useful consciousness

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annihilate:to destroy completely

expandable:not worth keeping not essential
infinitesimallyi:in amounts so small as to be barely measurable
correlate:to figure out or create a relationship between two items or events
paradox :statement or an event that sounds impossible but seems to be true
resilient:strong but flexible able to withstand stress without injury
undulate:to move in waves or in a smooth wavelike motion
malfunctioning:not working or operating properly malfunction
stagnating:becoming foul or rotten from lack of movement stagnate
subliminal:below the level of consciousness
autor: Ray Bradbury /travis kill eckels /time safari , INC.

## The beginnings of english: old and middle english 600-1485 setting the scene the first literature

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Tema 2

TEMA 2.High middle ages(1001-1300) and late m.A(1300-1485).Ongoing Expansion of islamic faith.Anglo-Sxon england invaded by William ,duke of Normandy.They Took literal possessions.Anglosazon=>Norman->Feudalism.Feudalism:complez social organisation based on functions and jiearchies. Functions: Oratores,bellatores,laboratores.Hierarchical: form superior to inferior According to essential degree.Defining features of the english medieval Period:-Resistance to monarcha´s feudal power.-Instability of political Power.-Pope´s authority also contested(Thomas becket´s murder in Canterbury)-Origin of some genuine institutions(oxford university, cambridge...)-Population Increase+developement of cities as centres of production and Commerce-

... Continue reading "The beginnings of english: old and middle english 600-1485 setting the scene the first literature" »

## Characteristics of new pragmatism mixed focus

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Gesture and thinking for speaking (TFS). Slobin proposed
that in the activity of speaking, thinking takes on a particular
quality as experiences are filtered through languages into
verbalized events. He suggested that TFS might not merely
influence how people talk about events, but how they
experience those events. He called this the anticipatory
effects of language, which arise during experience time.
It is during speaking time TFS comes into play,
Thinking for speaking is a particularly compelling area of L2
research with regard to L2 meaning and self-regulation.
McNeill’s research, which links TFS features to gestures, show
that the dialectical interaction between speaking and gesturing
in the GP brings out some semiotic effects that don’t appear
immediately
... Continue reading "Characteristics of new pragmatism mixed focus" »

Classified in Physics

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Robert Frost - 1874-1963

Two roads diverged in a yellow wood. And sorry I could not travel both, And be one traveler, long I stood, and looked down one as far as I could, to where it bent in the undergrowth.

I took the other, as just as fair, and having perhaps the better claim, because it was grassy and wanted wear, though as for that the passing there, had worn them really about the same.

And both that morning equally lay, in leaves no step had trodden black, oh I kept the first for another day, yet knowing how way leads on to way, I doubted if I should ever come back.

I shall be telling this with a sigh, somewhere ages and ages hence, two roads diverged in a wood, and I, I took the one less traveled by, and that has made all the difference.

## Air law

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Waves: Chapters 14 and 16

-Mechanical vs electromagnetic waves

mechanical waves= need air to hear needs a medium to travel

• sounds, ocean waves, and springs

electromagnetic waves=  they don’t need a medium to travel

• radio waves, microwaves, infrared, visible light, X-rays, gamma ray

 mechanical electromagnetic must travel through a medium does not require medium cannot travel through a vacuum can be transferred through waves

-Transverse waves vs longitudinal waves

longitudinal waves - particles vibrate a long wave direction such as sound waves, springs, streams

transverse- particles that vibrate along the right angle of a wave direction. All electromagnetic waves and water

-Label a transverse wave and longitudinal waves

-The electromagnetic spectrum

electromagnetic

... Continue reading "Air law" »