The system shown in the figure is in equilibrium. The metal
spheres are identical and each has a mass of 2 kg. The
surface areas of the pistons are equal and 100 square
centimeters each. The density of water is 1 g per cubic
centimeter.
Assuming that the frictions and masses of the pistons are
negligible, what is the mass of G?
( g = 10N/kg )
Why does heat cause matter to expand?
When a string is placed on a slab of ice, the string passes through it.Why ?
Explain what is a newton meter?
How does a sailor find his longitude ?
When the letters of an opposite side board are found in a mirror as reverse,why the same is not shown as up and down?
Explain refraction?
In which medium does the sound travel fatest?
Explain the use of galvanometer?
Tell me why does a tilted gyroscope not fall?
What is Real image ?
What is the shadows?
Explain radio telescopes?