# Shared Flashcard Set

## Details

Phys 111 final
ISU phys 111 final
19
Physics
12/14/2011

Term
 convection
Definition
 material moves and carries heat
Term
 examples of convection
Definition
 heat air hot air less dense hot air rises and takes heat can have forced convection where furnace blows hot air
Term
 Conduction
Definition
 Q = kA(∆T/L)
Term
Definition
 Can transfer energy through vacuum Heat from sun in radiation
Term
Definition
 Q/T = P= eσAT^4
Term
 σ
Definition
 5.67 x 10-8 W/m2k4
Term
 e
Definition
 o (shiney) 1 (black)
Term
 What power radiated by tunsten sphere at 500˙C in room at 200˙C? e = .35
Definition
 Q/t = eσA(Tw4-Trooom4) .35(5.67 x 10-8)(4Π(.02m)2)(7734-2934) P = 34.9
Term
 k
Definition
 thermal conduct
Term
 A
Definition
 area perpendicular to heat flow
Term
 L
Definition
 length
Term
 t
Definition
 time where Q (j) are transferred
Term
 Metal rod has one end in ice H2O and one in boiling. How much heat is transferred? (conduction)
Definition
 Q = kA(∆T/L)t Q = (217)Π(.01m)2(100k/.5m)60s =818 K = 195 cal
Term
 Ideal gases N n NA m M
Definition
 N= nNA; number of molecules n = number of moles NA = 6.02 x 10-23 m = mass of individual M = molecular mass
Term
 Ideal Gas LAw
Definition
 use approximation of elastic collision   PV = NkT = RNT
Term
 IDEAL GAS LAW K R N n
Definition
 K = 1.38 x 10-23 R = 8.31  N = number of molecules n = number of moles   * NK = nR
Term
 If as in conatiner and change P1V1T can use simplified form of gas law
Definition
 P1V1/T1= P2V2/T2
Term
 KINETIC THEORY (gas)
Definition
 U = 3/2 nRT (Vrms)
Supporting users have an ad free experience!