Pressure in Fluids and Atmospheric Pressure — PHYSICS STD 9 — Question

Name the substance through which light is made to pass.

The table below shows the distance travelled by two vehicles A and B during each second:

Time (s)	0	1	2	3	4	5	6	7
Distance travelled by A (m)	0	20	80	180	240	300	360	420
Distance travelled by B (m)	0	10	40	90	160	250	360	490

Which vehicle is moving with uniform velocity?

What are ultrasonic?

State three factors affecting evaporation.

The area under a speed-time graph in a given intervals gives the total distance covered by a body irrespective of its motion being uniform or non-uniform.

Name the physical quantity that causes motion in a body.

What does SONAR stand for? Where do we make use of SONAR?

Is sound a form of energy?

When is a body said to be at rest?