What is sound barrier ?

An aircraft travelling at 600km/h accelerates steady at 10 km/h per second. Taking the speed of sound as 1100 km/h at the aircraft's altitude, how long will it take to reach the sound barrier?

An aircraft travelling at 600km/h accelerates steady at 10 km/h per second. Taking the speed of sound as 1100 km/h at the aircraft's altitude, how long will it take to reach the sound barrier?

What is depletion barrier?

What is barrier potential?

What is barrier potential?

What is barrier potential ?

Wht happens in barrier method of birth control? List its types. What are the agents utilised in chemical barrier mthod?