Welcome to the Quiz!
This quiz contains 15 questions from a mix of 1 subtopics.
What is the formula used to calculate pressure?
P = F / A
P = F + A
P = F x A
P = F - A
|
What units is pressure measured in?
kgm-3
pa
N m-1
m s-2
|
According to the equation P = h ρ g, what does ρ represent?
density
pressure
depth
gravity
|
Which of the following best defines upthrust?
the downward force exerted by an object
the sideways force exerted by an object
the pressure at the bottom of a fluid
the upward force exerted on an object submerged in a fluid
|
According to Archimedes’ principle, what is upthrust equal to?
the weight of the displaced fluid
the depth of the object in the fluid
the volume of fluid displaced
the weight of the object in the fluid
|
What happens to pressure as depth increases in a stationary fluid?
it decreases
it stays constant
it increases exponentially
it increases linearly
|
According to the formula P=hρg, if the depth doubles, what happens to the pressure?
it halves
it quadruples
it doubles
it quarters
|
What causes the upthrust force on submerged objects?
pressure difference
viscosity of fluid
pull of gravity
fluid adhesion
|
How does upthrust on an object change if the object sinks deeper while fully submerged?
upthrust remains constant
upthrust becomes zero
upthrust increases
upthrust decreases
|
What is the name given to the upward force experienced by objects immersed in fluids?
|
What principle links upthrust to the weight of displaced fluid?
|
How does pressure change with depth in stationary fluids?
|
Calculate the pressure exerted by a 500 N force applied over an area of 0.25 m2.
200 Pa
125 Pa
1,250 Pa
2,000 Pa
|
What is the pressure at a depth of 10 m in seawater, assuming the density of seawater is 1,025 kg m-3 and the gravitational field strength is 9.81 m s-2? Atmospheric pressure is 101 kPa.
201,552.5 Pa
20,250 Pa
100,250 Pa
301,250 Pa
|
Calculate the upthrust on a sphere submerged in oil, with a volume of 0.05 m3. The density of the oil is 800 kg m-3.
392 N
588 N
490 N
294 N
|