. If the velocity of a body does not change, its acceleration is

Related questions

Define force Write its SI unit

---

What are ultrasonic waves

---

Why is sound wave called a longitudinal wave

---

Define the following terms Time period

---

The number of vibration/ oscillation executed per second is known as

---

The loudness of sound is determined by the

---

What is vacuum? Explain why sound cannot travel through vacuum

---

What is reverberation How can it be reduced

---

The velocity of sound in vacuum is

---

A number of oscillations completed per second is called

---

Eardrum is a part of

---

Pitch of sound is determined by its

---

A man throws the ball with the same speed vertically upwards one

---

The strength of force is expressed by

---

The relation between frequency f and time period T is given by

---

What is time period Write its S.I unit

---

A sonar device on a submarine sends out a signal and receives an echo 5 s later

---

How is ultrasound used to cleaning

---

Explain how bats use ultrasound to catch a prey

---

What is loudness of sound? What factors does it depend on

---