Question

1) ​Limiting value of velocity of streamline, beyond which the flow becomes turbulent is known as _____________.

2)​Work done in stretching a wire against restoring force is stored as ________ in the wire.

3)​The ratio between the escape velocity and orbital velocity is ----------.

4)​Gravitational force of attraction between two bodies of unit mass placed at a unit distance apart is known as--------------------------.​

Answer 1

1. critical speed
2. strain energy
3. VE=2VO
4. Universal gravitational constant