Coeficienti calorici

Question 1

Capacitatea calorica

Answer 1

C=Q/ ΔT
C=1J/K

-reprez cantitatea de cald necesara unui corp pt a si modifica temp cu un grad

Question 2

Caldura periferica

Answer 2

c=Q/m* ΔT
c=1J/Kg*K

-reprez cant de cald necesara unitatii de masa dintr o subst pt si modifica temp cu un grad

C=m*c

Question 3

Cald molara

Answer 3

Cμ=Q/V(niu)ΔT
Cμ=μc
C=V(niu)*Cμ

-in transf izobara cald molara se noteaza cu ( Cp )
- in transf izocora cald molara se noteaza cu ( Cv )

Question 4

caldura molara in izobara formula

Answer 4

Cp=Cv+R -> RELATIA LUI MAYER

Cp=Cv+R/μ

Question 5

Expresiile lucrului mec, cald si variatie energ intra in transf simple ale gazului ideal
care sunt expresiile?

Answer 5

1. Transf izocora
2. T. izobara
3. T. izoterma
4. T. adiabatica

Question 6

1. Transf izocora

Answer 6

v=cst
V(niu)= cst
P/T=cst
L=0
Q=ΔU, Q>0, ΔU>0
Q<0, ΔU<0

Question 7

2. T izobara

Answer 7

P=cst

L=V(niu) R ΔT
ΔU=V(niu) Cv ΔT

Question 8

3. T. izoterma

Answer 8

T=cst
Q=L= V(niu)RT* KV1/V2
Q=L= 2,3VRTlgV1/V2

Question 9

4. T. adiabatica

Answer 9

γ-coeficient adiabatic

Q=0
y=Cp/Cv
ΔU=V(niu) Cv ΔT=m/μCvΔT
L= -VCvΔT= -m/μCvΔT

Question 10

ΔU=V(niu) Cv ΔT

Answer 10

intodeauna

Question 11

L= VRTlnP1/P2

Answer 11

numai la izoterma (T=cst)
e cu MINUS doar la adiabatica