Fizika fanidan laboratoriya ishi daftari

m₁=bosh kalorimetr massasi

m₂=suvli kalorimetr massasi

m_s=suv massasi

t₁=qaynagan suv temperaturasi

t₂=sovuq suv temperaturasi

t₃-aralashma temperaturasi

c₀-idish salishtirma issiqlik sig’imi920J/kg*k

c_s-suv salishtirma issiqlik sig’imi-4200J/kg*k

c-qattiq jisimning solishtirma issiqlik sig’imi

Ishning natiyjasi: ______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

Javoblar:

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Bahosi: ________ Tekshirdi :_________________

№2Laboratoriya ishi

Turli temperaturali suv aralashtirilganda issiqlik

miqdorini taqqoslash
Kerakli jihozlar: 1 l sig‘imli ikkita idish, termometr, menzurka, issiq va sovuq suv.
Ishni bajarish tartibi

1. 
   Menzurka yordamida massali issiq suvni o‘lchab, birinclii idishga quying va uning temperaturasi t\ ni o‘lchang.
   
2. 
   Menzurka yordamida m₂ massali sovuq suvni o‘lchab ikkinchi idishga quying va uning temperaturasi t₂ ni o‘lchang.
   
3. 
   Ikkinclii idishdagi sovuq suvni birinclii idishdagi issiq suvning ustiga quying va aralashmaning muvozanatlashgan temperaturasi / ni o‘lchang.
   
4. 
   Aralashmada issiq suv bergan issiqlik miqdorini Q_i = cm₁(t₁ - t) formula yordamida liisoblang, bunda с suvning solishtirma issiqlik sig‘imi.
   
5. 
   Aralashmada sovuq suv olgan issiqlik miqdorini Q₂ = cm₂(t - t₂) formula yordamida liisoblang.
   
6. 
   Aralashtiriladigan issiq va sovuq suvning massalarini o‘zgartirib, 1-5- bandlarga muvofiq ishni uch marta takrorlang.
   
7. 
   O‘lchash va hisoblash natijalarini jadvalga yozing.
   

m1, kg	t1, ^oC	m2, kg.	t2, ^oC	t, ^oC			Q1	Q2
						4200

Ishning natijasi: ___

m 1=m- m0 _______________________________________________________

m2=m- m0 _______________________________________________________ Q₁=cm₁(t₁-t) _______________________________________________________ Q₂=cm₂( t-t₂) _________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

Javoblar:

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Bahosi: ________ Tekshirdi:_____________________________

№3 Laboratoriya ishi

SUYUQLIKNING SIRT TARANGLIK KOEFFITSIENTINI

ANIQLASH
Kerakli jihozlar: maxsus dinamometr, shtativ, uzunligi 5 sm atrofida bo‘lgan П shaklida bukilgan sim, sovunli suv eritmasi, suyuqlik solinadigan idish.

Ishning bajarish tartibi:

1. 
   Dinamometmi yuqori halqasidan shtativga о‘mating.
   
2. 
   Chizg‘ich yordamida П shaklida bukilgan simning perimetri l ni o‘lchang.
   
3. 
   Dinamometming pastki halqasiga П shaklidagi simni iling va simning og‘irlik kuchi F₁ ni o‘lchang.
   
4. 
   Alohida idishda sovunli suv eritmasini tayyorlang va uni ko‘pirtiring.
   
5. 
   Dinamometrga osilgan simni idishdagi eritmaga tushiring.
   
6. 
   Eritma solingan idishni astalik bilan pastga tomon siljitib, simning eritmadan uzilishi davridagi dinamometming ko‘rsatishi F₂ ni yozib oling.
   
7. 
   F = F_i - F₂ formuladan sirt taranglik kuchini toping
   
8. 
   σ= F/l formula yordamida suyuqlikning sirt taranglik koeffitsientini hisoblang.
   
9. 
   Tajribani uch marta takrorlang. σort=( σ1+σ2+σ3)/3 formula yordamida sirt taranglik koeffitsientining o‘rtacha qiymatini hisoblang.
   
10. 
    Tajriba davomidagi o‘lchash va hisoblash natijalarini jadvalga yozing.
    

F= F2-F1

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σ= F/l _________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

L, m	F, N	σ, N/m	σort, N/m

Javoblar:

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Bahosi: ________ Tekshirdi :_____________________________
№4Laboratoriya ishi

SHISHANING NUR SINDIRISH KO^’RSATKICHINI ANIQLASH
Kerakli jihozlar:elektr lampa, tirqishli to‘siq, uchburchakli shisha prizma, ip, transportir.

Ishni bajarish tartibi

1. 
   S manbani yoqib, uning yo‘liga tirqishli to‘siqni shunday joylashtiringki, to‘siq ortida ingichka dastali nur hosil bo‘lsin. Nur yo‘lini stol ustiga chiziq tortish orqali belgilang.
   
2. 
   Nur dastasi yo‘liga uchburchakli shisha prizmani joylashtiring. Prizmaning yuqori uchidagi
   

a burchakni yozib oling (bu burchak prizmaga yozilgan bo‘ladi).

3. 
   Prizma qo‘yilganda nur dastasi О nuqtada sinadi va o‘z yo‘lini o‘zgartirib, у burchakka buriladi. Nurning singan yo‘lini ignalar bilan belgilang a va у burchakni transportir bilan o‘lchang.
   
4. 
   Nur sindirish ko‘rsatkichi n bo‘lgan shisha prizmadan havoga o‘tish holati uchun yorug‘likning sinish qonunini quyidagicha ifodalash mumkin: bunda a - shisha va havo chegarasiga numing tushish burchagi bo‘lib, uning kattaligi prizmaning yuqorigi burchagiga teng. a va у ning o‘lchangan qiymatini
   

formulaga qo‘yib, berilgan shishaning nur sindirish ko‘rsatkichini aniqlang.

10. 
    Shisha prizmani manbadan turli uzoqlikka qo‘yib, tajribani uch marta takrorlang. Har bir holat uchun burchakni o‘lchang va shishaning nur sindirish ko‘rsatkichini aniqlang.
    
11. 
    O‘tkazilgan uchta tajribadan olingan natijalar asosida shishaning nur sindirish ko‘rsatkichining o‘rtacha qiymati n_on ni hisoblang.
    

Tajriba jarayonidagi o‘lchashva hisoblash natijalarini jadvalga yozing.