Understanding Frequency and Voice Differences

The video tutorial explains why women have shriller voices than men by discussing the concept of frequency. It uses a scenario where a door opens only with a woman's voice to illustrate the difference. Frequency is defined as the number of vibrations per second, with higher frequency resulting in a shriller sound. The tutorial further explains that the length of vocal cords affects frequency, with women's shorter vocal cords vibrating more per second, thus producing higher frequency sounds compared to men's longer vocal cords.

Why does the door open only with a woman's voice command in the scenario?

• Because women's voices are softer

• Because women's voices have a higher frequency

• Because women's voices are more authoritative

• Because women's voices are louder

What is frequency defined as in the context of sound?

• The loudness of a sound

• The pitch of a sound

• The number of vibrations per second

• The duration of a sound

How does the frequency of a sound affect its shrillness?

• Higher frequency makes the sound deeper

• Higher frequency makes the sound shriller

• Frequency does not affect shrillness

• Lower frequency makes the sound shriller

What is the approximate length of a woman's vocal cords?

• 10 millimeters

• 20 millimeters

• 15 millimeters

• 25 millimeters

Why do men's vocal cords produce sound with a lower frequency?

• Because they are thinner

• Because they vibrate more per second

• Because they are longer

• Because they are shorter

What is the main reason women's voices are shriller than men's?

• Women's vocal cords are less flexible

• Women's vocal cords vibrate more per second

• Women's vocal cords are longer

• Women's vocal cords are thicker