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