
1. Acoustics, physical concepts
Authored by Mohamed Mahmoud
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University
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24 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does acoustics primarily study?
Brain responses to sound
Sound production, transmition, perception
Hearing disorders
Sound amplification in hearing aids
Answer explanation
Acoustics is a physical branch whicgh seals with the study of sound: production, transmittion and perception
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is not a fundamental physical quantity?
Mass
Time
Force
Length
Answer explanation
The basic physical quantities are mass, time and length. All other physical quantities are derived from combinations of these three
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The unit of time is
Second
Minute
Hour
Millisecond
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which statement about mass and weight is correct?
Weight remains constant in all locations
Mass is constant; weight depends on gravity
Mass and weight always change together
Mass is measured in newtons
Answer explanation
Mass is constant; weight depends on gravity because mass depends on density, and the density is constant. While weight ais affected by gravity changing
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If two objects have the same size but different masses. What can you conclude?
They must be made of the same material
Their densities are different
They have different lengths
They weigh the same
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the MKS system, which units are used for mass and length?
Gram and centimeter
Pound and inch
Dyne and millimeter
Kilogram and meter
Answer explanation
MKS = Meter. Kilogram, second
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The CGS system uses which units for force and work?
Newton and joule
Dyne and erg
Pascal and watt
Calorie and volt
Answer explanation
Force unit is dyne = 1g*cm/s2 while work unit is erg = dyne*cm
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