## Glossary of Physics L..1

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- What does "thermo" mean?
- statistical physics/mechanics

- what is the zeroeth law?
- 2 objects in thermal equilibrium (same temp) with a 3rd object are also in T.E. w/ each other

- temperature has what kind of relationship with all of its relating properties?
- linear

- Linear expansion due to heat of object with length L..what is the new length?
- L= Lo + (del)L

(del)L = (alp)L(del)T

- Area expansion due to heat of object with length, L and width, w...what is the new area?
- A= Ao(1 + 2(alp)(del)T)

- Typical value for alpha?
- 10^-6 C^-1

- Volume expansion due to heat with object with volume, L.
- del(V) = (beta)V(del)T

- What is the value of Beta?
- 3(alpha)

- Typical values of beta for liquid? gas?
- liquid -- 10^-4

gas -- 10^-2/3

- Boyle's Law

-equation?

-shape of curve? - PV=constant

hyperbola

- Charle's Law

-equation?

-shape? - V proportional to (del)T

linear

- Gay-Lussac's Law

-equation?

-shape? - P proportional to T

linear

- What is absolute zero?
- 0 K or -273.15 C

- P/M is always what?
- constant

- What is a mole?
- quantity of matter equivalent in 12 grams of C12

- What is the Universal Gas Law?
- PV= nRT

- What is the value of the universal gas constant, R?
- 8.315 J/K