See also:
What is the word formula for pressure??
$$ \text{pressure} = \frac{\text{force}}{\text{area}} $$
What are the units of pressure??
pascals, $\text{Pa}$
What is one Pascal equal to??
$1Nm^{-2}$, one Newton per square metre.
What is atmospheric pressure approximately equal to??
$$ 1\times10^{5} Pa $$
What is the symbol formula for pressure??
$$ P = \frac{F}{A} $$
What is a fluid??
A gas or a liquid.
What is the symbol formula for the pressure in a fluid??
$$ P = \rho h g $$
What is the word formula for the pressure in a fluid??
$$ \text{pressure} = \text{density} \times \text{height} \times \text{gravitational field strength} $$
If you have a cylinder with cross-sectional surface area $A$ and height $h$, what is the formula for its volume??
$$ V = A \times h $$
If you have a cyclinder with volume $V$ and density $\rho$, what is the formula for its mass??
$$ m = V\rho $$
If you have a cyclinder with mass $m$, what is the formula for its weight??
$$ W = m \times g $$
If you have a cylinder with weight $w$ and cross-sectional surface area $A$, what is a formula for the pressure in the fluid??
$$ P = \frac{w}{A} $$
What is the symbol formula for pressure in a fluid??
$$ P = \rho h g $$
What seems “magic” about the formula for pressure in a fluid??
The surface area does not matter.
Why does the surface area part of the pressure in a fluid equation dissapear??
Because the area component of volume cancels out:
$$ \frac{\rho g h \text{\sout{A}}}{\text{\sout{A}}} $$
What is the word formula for pressure in a fluid??
$$ \text{density} \times \text{height} \times \text{gravitational field strength} $$
What does $\rho$ represent in the pressure in a fluid equation??
The density of the fluid.
What assumption are you making for the pressure in a fluid equation??
That the density of the fluid stays constant.
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Metadata
date: 2020-11-09 14:18
tags:
- '@?physics'
- '@?pressure'
- '@?public'
- '@?year-1'
title: Physics - Pressure