Concept
A man falls flat into a pool such that his entire body is completely underwater. Are his head or feet at a higher hydrostatic pressure?
They are equal.
What relationship does P have with each variable in the Ideal Gas Law equation (PV = nRT)?
V = inverse relationship
n = linear relationship
R = linear relationship
T = linear relationship
What is the standard unit for temperature?
K (kelvin)
What is the density of water in standard units?
1000 kg / m^3
Pressure is often expressed in Pascals (Pa) what is another common way that Pressure is measured?
atm
A gas is in sealed but flexible container. The pressure and temperature in the container are doubled. What is the new volume (V2) in comparison to the initial volume (V1).
V2 = V1
A liquid is at 43 degrees Celsius. What is the liquids temperature in Kelvins?
Temperature = 316 K
What does the roe variable (p) in the Hydrostatic Pressure equation refer to?
The density of water
In an Ideal gas situation, as pressure and volume increase what happens to the temperature if the amount of gas stays the same?
It will increase.
What does each variable in the Ideal Gas Law (PV = nRT) equation represent?
! Extra 20 points for every variable you can answer with their standard units.
P = Pressure (Pa)
V = Volume (m^3)
n = Amount (mol)
R = Ideal gas constant (Pa m^3 / mol K)
T = Temperature (K)
It is 50 degrees Fahrenheit outside. What is the temperature in Kelvins?
283 K
A man dives into a lake at a depth of 15 meters below the surface. What is the hydrostatic pressure at this depth?
147,000 Pa
A block is half submerged in a liquid. I want to find the total amount of pressure acting on the block. What equation should I use?
! Write it in its entirety
Ptotal = pgh + Psurface
! n, R, and T are all constant for both of these containers.
P = 40 Pa
A beaker containing a liquid substance is initially at 20 degrees Celsius. The beaker is transferred over to a hot plate where a student gradually increases its temperature. After some time, the substances final temperature is 67 degrees Celsius. What is the change in temperature in Kelvins?
47 K
A girl jumps into a pool at a depth of 3ft. After she jumps the girl decides to swim 7 ft deeper. What is the hydrostatic pressure at the girl's depth?
294,000 Pa
If you are given force, acceleration, volume, and height can you find Hydrostatic pressure? If so, walk through how.
Yes!
Write an equation that represents the relationship between pressure and volume in ideal gas law.
P1 / V1 = P2 / V2
I have a glass of cold water. I leave it out on the counter and it evenutally reaches room temperature. I have a thermometer in Fahrenheit, but I want to determine THE CHANGE IN TEMPERATURE in Kelvins should I use a conversion? Or equation?
conversion
Two objects are dropped into a body of water. At a certain point in time object 1 is 3 feet deeper than object 2. Why does object 1 have a greater hydrostatic pressure than object 2?
Because object 1 is deeper than object 2 it takes on more of the waters weight. Because weight is a force the standard pressure equation P = F/A will be greater for object 1.