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Sainmheáchan

Bosca Sonraí Méid FisiciúilSainmheáchan
Foirmle Cuir in eagar ar Wikidata

Is éard is an sainmheáchan ann (ar a dtugtar freisin an t-aonadmheáchan) ná an meáchan in aghaidh aonad toirte d'ábhar. Is é γ (Gáma ina litir bheag, an tríú litir san aibítir Ghréagach) an tsiombail i gcomhair an tsainmheáchain.

Úsáidtear go coitianta sainmheáchan d'uisce ar an Domhan ag 5° C ar a bhfuil an luach 62.43 lbf/ft3 nó 9807 N/m3.

Foirmle ghinearálta

[cuir in eagar | athraigh foinse]

I gcás:

γ sainmheáchan an ábhair (meáchan in aghaidh an aonaid na toirte, de ghnáth N/m3 aonad)
ρ dlús an ábhair (aonad maise in aghaidh toirt, de ghnáth kg/m3)
g luasghéarú de bharr domhantarraingthe (ráta athraithe treoluais, tugtha i m/s2)
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Sainmheáchan
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