What is meant by normal modes?

1096

---

What is sonar ( sound navigation and ranging )?

1075

---

For what the parabolic dishes are used?

969

---

How does a sound wave travel in air?

1064

---

What is acoustics?

992

---

What is the wavelength of sound in air?

1018

---

What is loudness of sound?

1069

---

What is the musical sound?

1184

---

What is the pitch?

1014

---

What is sound velocity?

1121

---

Who first detected radio waves?

1014

---

What is the formula of velocity?

975

---

The velocity of sound in gas depends upon what?

1001

---

What is frequency of sound in air?

1106

---

What is speed of sound through water?

1020

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