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Q 1/30
Score 0
What happens to the density of an object if its mass remains constant while its volume increases?
30
The density increases.
The density becomes zero.
The density remains the same.
The density decreases.
Q 2/30
Score 0
Which of the following objects is most likely to float in water?
30
An object with a density of 1.5 grams per cubic centimeter
An object with a density of 2 grams per cubic centimeter
An object with a density of 5 grams per cubic centimeter
An object with a density of 0.8 grams per cubic centimeter
30 questions
Q.
What happens to the density of an object if its mass remains constant while its volume increases?
1
30 sec
Q.
Which of the following objects is most likely to float in water?
2
30 sec
Q.
If you have two substances with the same mass but different densities, which one occupies a larger volume?
3
30 sec
Q.
What force is responsible for the upward push experienced by an object submerged in a fluid?
4
30 sec
Q.
According to Archimedes' principle, how does the buoyant force acting on an object in a fluid compare to the weight of the fluid that the object displaces?
5
30 sec
Q.
In fluid dynamics, what term describes a fluid with no viscosity and incompressibility, often used to simplify calculations?
6
30 sec
Q.
What happens to an object that is denser than the fluid it is placed in?
7
30 sec
Q.
In an ideal fluid, which factor primarily determines the flow velocity of the fluid through a narrow section of a pipe?
8
30 sec
Q.
What type of flow is characterized by smooth, constant fluid motion?
9
30 sec
Q.
Which principle states that an increase in the speed of a fluid occurs simultaneously with a decrease in pressure or potential energy within that fluid?
10
30 sec
Q.
What is the unit of pressure defined as one newton per square meter?
11
30 sec
Q.
What type of pressure is measured relative to the surrounding atmospheric pressure?
12
30 sec
Q.
What effect causes the curved surface of water in a glass due to cohesion and adhesion forces?
13
30 sec
Q.
In which type of flow do there appear to be eddies and swirls, and the flow is chaotic?
14
30 sec
Q.
Which type of pressure is the total pressure exerted on a surface, including atmospheric pressure?
15
30 sec
Q.
Which law states that pressure applied to an enclosed fluid is transmitted undiminished throughout the fluid?
16
30 sec
Q.
What is the phenomenon where a liquid's surface behaves like a stretched elastic membrane due to cohesive forces among liquid molecules?
17
30 sec
Q.
18
30 sec
Q.
What is the relationship between work, energy, and power in a mechanical system?
19
30 sec
Q.
Which equation correctly defines the impulse experienced by an object?
20
30 sec
Q.
Which of the following best describes the principle of conservation of momentum?
21
30 sec
Q.
How is power related to work done in a given time interval?
22
30 sec
Q.
23
30 sec
Q.
Which quantity describes the rotational effect of a force applied at a distance from the axis of rotation?
24
30 sec
Q.
What unit is commonly used to measure angular displacement?
25
30 sec
Q.
Which component of a fluid does a pitot tube, a type of manometer, specifically measure?
26
30 sec
Q.
According to the Continuity Equation, if a fluid's speed increases, what happens to the cross-sectional area of the pipe?
27
30 sec
Q.
Which of the following factors affects the viscosity of a fluid?
28
30 sec
Q.
What term describes the rate at which a fluid flows through a surface?
29
30 sec
Q.
Which of the following correctly defines hydrostatic pressure?
