Notes, abstracts, papers, exams and problems of Physics

Sort by
Subject
Level

Physical Exercises

Classified in Physics

Written at on English with a size of 10.56 KB.

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

Classified in Physics

Written at on English with a size of 4.9 KB.

(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

Classified in Physics

Written at on English with a size of 22.38 KB.

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-

... Continue reading "Sdeasd" »

Fyq

Classified in Physics

Written at on English with a size of 1.56 KB.

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.

Physical and chemical energy

Classified in Physics

Written at on English with a size of 2.31 KB.

TEMP CELSIUS TO FAHRENHEIT; (1.8*C)+32=F

FAHREN TO CELSIUS:(F-32)/1.8=C
TO GET KELVIN: add 273.15 to celsius.
KELVIN TO CELSIUS: add 273
CELSIUS TO KEVIN: menos 273.
   FORMULAS
   Q= U-W
Q=MCAT          
DEFINITIONS:
 -THERMODYNAMICS:dexcribe the transfer of energy(deals with the relationship between heats and other forms of energy).-ENTROPY:the amount of disorder in a system.-ENTHALPY;change in heat or measure of heat content. -GLISS FREE ENERGY:amount of energy in a system that is available to do work. -ABSOLUTE ZERO:lowest temperature. -RADIATION:energy transmitted in waves. -CONDUCTION: transfer of energy. CONVECTION heat is transfered by mass or liquid. 1ST LAW: heat is a form of energy, conservation of energy, 2ND LAW:states that
... Continue reading "Physical and chemical energy" »

gtrhy

Classified in Physics

Written at on English with a size of 2.24 KB.

terrible time-keeper, shopaholic,untidy,obsessively well organized,countless, tiny, inhospitable, furious, even, major, single-minded, addictive, bald-headed, bad-tempered, brown-eyed, curly-haired,easy-going,long-legged, rosy-cheeked, suntanned, warm-hearted, broken-hearted, absent-minded, broad-minded, self-centred, self-disciplined, big-headed, hard-headed, amazed/amazing, bored/boring, interested/interesting, pleased-pleasing, worried-worrying, satisfied/satisfying, casual, colourful, crowded, excited, formal, grand, imposing, relaxed, sophisticated, spacious.

Ankle(tobillo en el pie), calf(la parte de atras de la pierna baja), elbow(codo), heel(donde los tacones), hip(cadera), palm(palma de la mano), shin(parte delanteda pierna abajo),
... Continue reading "gtrhy" »

Orwell

Classified in Physics

Written at on English with a size of 2.73 KB.

Introduce George Orwell's life and works (refer to main issues, do not focus only in 1984)

His real name was Eric Arthur Blair. George Orwell was an essayist, Novelist, literary critic and fighter for political change. He was born in 1903, India (which was a British territory) He experienced many hardships in Its puritanical cutthroat environment. In the autobiographical essay “Such, Such were the Joys” Orwell describes the social challenges he endured as a Scholarship student among England´s wealthy elite (these challenges would Inform his satires of social stratification in his literary works, such as “Animal Farm”) In the said essay, he describes his child self with much sympathy and Feeling for the child´s perspective, he wasn´t

... Continue reading "Orwell " »

sfrgt

Classified in Physics

Written at on English with a size of 1.28 KB.

in my departament there are twenty people. Irene ruiz is in charge of the deparment and manuel is the director, im one of the secretaries.We are going to work with uniform, there is good atmosfera because we are frow other countries. For example: jonh is from london we have a small building. We use computers mobile phones and new technologies. The walls are painted blue and write. There is a room for bills another is a toilet. When you enter in the departmentyou vcan see an entrance hall and you can speak to a reception. We are trying to be the market leader, and we are going to obtain this place next year.

DEBER INGLES

Classified in Physics

Written at on English with a size of 2.45 KB.

¡Precaution!

Irregular verbs:break-broke:Romper/Can-could:Poder/Come-came: venir/Do-Did: hacer/ Drink-drank:Beber/eat-ate:comer/feel-felt:sentir/Give-gave:dar/Go-went:Ir/Have-had:Tener/Keep-kept:Guardar/Make-made:Hacer/Meet-met:Hacer/Pay-paid:pagar/See-saw:Ver/Swin-swam:Nadar/Take-took:Tomar/Think-thought:Pensar/Win-won:Ganar/Write-wrote:Escribir.-. --,.Correction fluid caution in the eyes mouth .-.Ultra smooth metal needle-point tip for precise correction-Easy application: shake and squeeze,Soft, squeezable body for increased control,.,Fast drying, premium coverage -  Multi-usage: can be used on all types of papers and ink--They ignite flammable liquids (untie fire) and burn easily at normal working temperatures generally. Liquid fuels

... Continue reading "DEBER INGLES" »

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

Classified in Physics

Written at on English with a size of 5.88 KB.

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" »