Do you know your formulae?

Do you know your formulae?

28 February 2011

07:14

Unit 5 Formulae

Tell the person next to you…
· All of the formulae from this unit (there are 6!)
o eg. "The formula that links ρ, m and V is…"
· All of the quantities from this unit
o eg. "ρ = density"
· All of the units from this unit
o eg. "The units of density are g/cm3 or kg/m3"

Answers

Formulae

· ρ = m / V
· p = F / A
· ∆p = ρgh
· p1 / T1 = p2 / T2 Gay-Lussac's Law
· p1V1 = p2V2 Boyle's Law
· TK = ToC + 273

Quantities and Units

· ρ = density (kg/m3 or g/cm3)
· m = mass (kg or g)
· V = volume (m3 or cm3)
· p = pressure (Pa or N/m2)
· F = force (N)
· A = surface area (m2)
· Δp = change in pressure (Pa or N/m2)
· g = gravitational field strength (N/kg)
· h = height/depth of fluid (m)
· T = absolute temperature (K) (not oC!)
· ToC = temperature (oC)