kalebstone8357
03.07.2019 •
Mathematics
If a = b, then a - c equals b - c. select one: a. always b. sometimes c. never
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Ответ:
Always
a=b
subtract c from each side
a-c = b-c
Ответ:
La presión manométrica debe ser 6,272,000 Pa = 61.9 atm
Step-by-step explanation:
La presión absoluta se refiere al valor de presión referido al cero absoluto o al vacío, sin presión atmosférica. Es decir, la presión absoluta es la presión con respecto al vacío total.
La presión manométrica es la que ejerce un medio distinto al de la presión atmosférica y representa la diferencia entre la presión real o absoluta y la presión atmosférica. Es decir, la presión manométrica se mide en relación a la presión atmosférica y se define como la diferencia entre presión absoluta (Pabs) y presión atmosférica predominante (Patm). La presión manométrica sólo se aplica cuando la presión es superior a la atmosférica.
Entonces, Pmanometrica = Pabs – Pamb
Para encontrar la presión a una profundidad h en un líquido sin movimiento, expuesto al aire cerca de la superficie de la Tierra, la presión manométrica puede ser calculada mediante:
Pmanometrica=ρ*g*Δh
donde ρ es la densidad del fluido, g la gravedad y Δh la variación en la altura.
En este caso:
ρ=1000 (densidad del agua) g= 9.8 Δh=hfinal - hinitial= 1370 m - 730 m= 640 mReemplazando:
Pmanometrica= 1000 *9.8 * 640 m
Resolviendo:
Pmanometrica= 6,272,000 Pa = 61.9 atm (siendo 1 pascal = 9.869*10⁻⁶ atmósferas )