Explanation

• Echoes are repeating sounds that are reflected back to the listener after the original sound has stopped.
• They are a result of sound waves bouncing off a surface and returning to the listener, creating a repeated or echoic effect.

Explanation

• Pitch is the characteristic of sound that allows us to differentiate between shrill (high-pitched) and grave (low-pitched) sounds.
• Pitch is determined by the frequency of the sound wave, with higher frequencies producing higher pitches and lower frequencies producing lower pitches.

Explanation

• The speed of sound in diamond is approximately 12,000 meters per second (m/s).
• It is one of the fastest speeds of sound among all materials.

The speeds of sound in different materials:

• Air: 343 m/s
• Water: 1433 m/s
• Wood: 3300-3600 m/s
• Brick: 4176 m/s
• Steel: 6100 m/s
• Diamond: 12000 m/s

Explanation

• The speed of sound in air at sea level and 20°C (68°F) is approximately 343 meters per second.
  

The speeds of sound in different materials:

• Air: 343 m/s
• Water: 1433 m/s
• Wood: 3300-3600 m/s
• Brick: 4176 m/s
• Steel: 6100 m/s
• Diamond: 12000 m/s

Explanation

• Sound travels slowest in air, with a speed of approximately 343 meters per second (m/s) at 20°C.
• This is because air is a gas and has a low density and stiffness, which allows sound waves to propagate more slowly through the material.

The speeds of sound in different materials:

• Air: 343 m/s
• Water: 1433 m/s
• Wood: 3300-3600 m/s
• Brick: 4176 m/s
• Steel: 6100 m/s
• Diamond: 12000 m/s

Explanation

• Sound travels fastest in diamond, with a speed of approximately 12,000 meters per second (m/s).
• This is because diamond has a very high stiffness and density, which allows sound waves to propagate quickly through the material.

The speeds of sound in different materials:

• Air: 343 m/s
• Water: 1433 m/s
• Wood: 3300-3600 m/s
• Brick: 4176 m/s
• Steel: 6100 m/s
• Diamond: 12000 m/s

Explanation

• The velocity of a wave (v) is equal to the product of its wavelength (λ) and frequency (f).
• This is expressed mathematically as: v = λf

Explanation

The fourth harmonic is two octaves higher in pitch than the fundamental frequency.

Explanation

• The second harmonic of a vibrating string is twice the frequency of the fundamental frequency.
• Since the fundamental frequency is 220 Hz, the second harmonic would be 2 x 220 = 440 Hz.

Explanation

• Frequency is the number of vibrations or oscillations produced by a vibrating body in one second.
• It's measured in Hertz (Hz), where 1 Hz equals one vibration per second.