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Forces And Fluids
Test Description: Questions deal with the physical properties of fluids and the practical applications of principles.
Instructions: Answer all questions to get your test result.
1) 1. An object weighing 50 kg is floating in a fluid. What is the buoyant force of the fluid on the object?
A
< 50 kg
B
> 50 kg
C
50 kg
D
Not enough information is given
2) How does the water pressure change as you dive farther underwater?
A
it increases
B
it stays the same
C
it decreases
D
it depends on where the water is located
3) At what depth is the buoyant force on a submerged object the greatest?
A
buoyant force on a submerged object is the same at any depth.
B
at the surface
C
on the ocean floor
D
at sea level
4) At what point is the water pressure greatest on the iceberg?
A
point A
B
point B
C
Water pressure is equal at all points
D
Point C
5) How much of the iceberg has a weight equal to the buoyant force?
A
the section from a to b
B
the section from b to c
C
There is no buoyant force acting on the object
D
all of it
6) Archimedes' principle states that _________________________.
A
the buoyant force on an object is greater than the weight of the fluid it displaces
B
the buoyant force on an object is equal to the weight of the fluid it displaces
C
when the speed of a fluid increases, the pressure exerted by the fluid decreases
D
pressure applied to a fluid is transmitted unchanged throughout the fluid
7) Materials that can flow to fit their containers include ______________________.
A
liquids.
B
both gases and liquids.
C
gases.
D
neither gases nor liquids.
8) Of the following, where would atmospheric pressure be greatest?
A
on a mountaintop
B
at the outer edge of the atmosphere
C
at the altitude at which planes fly
D
at sea level
9) The SI unit for pressure is
A
K
B
Pr
C
N
D
Pa
10) Which of the following is NOT a fluid?
A
water
B
pure oxygen
C
ice
D
steam
*select an answer for all questions
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