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Solve exercise 1 on page 55 of Physics 12 textbook
Problem:
Do low and high sounds have the same nature?
Solution:
Yes, but they differ in frequency.
Solve exercise 2 on page 55 of Physics 12 textbook
Problem:
What is sound wave?
Solution:
Sound wave is a mechanical wave transmitted through solid, liquid, or gas mediums.
Solution to Exercise 3 on page 55 of Physics 12 Textbook
Problem:
What is music sound?
Answer:
Music sound refers to sounds with specific frequencies typically produced by musical instruments.
Solution to Exercise 4 on page 55 of Physics 12 Textbook
Problem:
Among the three mediums: solid, liquid, and gas, in which medium does sound propagate the fastest and in which does it propagate the slowest?
Solution:
Fastest in solid, slowest in gas.
Solution to exercise 5 page 55 Physics textbook for grade 12
Problem statement:
What is sound intensity measured by?
Solution:
Sound intensity is measured in W/m2
Solution to exercise 6 page 55 Physics textbook for grade 12
Problem statement:
Choose the correct statement.
Ultrasound is:
A. with high frequency.
B. has very high intensity.
C. has a frequency above 20000 Hz.
D. propagates faster than sound in all environments.
Solution:
Answer is C.
Solution to exercise 7 page 55 Physics textbook for grade 12
Problem statement:
Choose the correct statement.
Sound intensity is measured by:
A. watts per square meter.
B. watts.
C. newtons per square meter.
D. newtons per meter.
Solution:
Answer A.
Solution to exercise 8 page 55 Physics textbook for grade 12
Problem statement:
A steel blade oscillates with a period T = 80 ms. Can the sound it emits be heard?
Solution:
Solution to exercise 9 page 55 Physics textbook for grade 12
Problem statement:
An ultrasound with a frequency of 1 MHz using table 10.1, calculate the wavelength of this ultrasound in air at 00C and in water at 150C.
Solution:
Solution to exercise 10 page 55 Physics textbook for grade 12
Problem statement:
To measure the speed of sound in iron, the French physicist Bi-ô used an iron tube 951.25m long. One person strikes one end of the iron tube with a hammer, while another person at the other end hears two sounds, one transmitted through the iron and one through the air inside the iron tube; the two sounds are 2.5s apart. Knowing the speed of sound in air is 340 m/s, calculate the speed of sound in iron.
Solution:
In Chapter I, Oscillatory motion of Physics 12, you will learn about Standing Waves. You should Solve exercise page 49 Physics 12 before attending class to improve your understanding of Physics 12.
Mechanical waves and wave propagation are the next topics in Chapter I, Oscillatory Motion Physics 12 grade 11, also check the hints for solving exercises on page 40 Physics 12 to grasp the knowledge and study Physics 12 well.
