PART - 2 CH - 13 Oscillations — Physics STD 11 Science — Question

An aircraft executes a horizontal loop of radius 1.00km with a steady speed of 900km/h. Compare its centripetal acceleration with the acceleration due to gravity.

Why is it not necessary for a body following another to stop, to avoid collision?

What is a variable force?

How is compressibility related to bulk modulus?

Solve the previous problem if the lead piece is fastened on the top surface of the block and the block is to float with its upper surface just dipping into water.

If tension of a wire is increased to four times, how is the wave speed changed?

In a tank filled with fresh water there is a hole in the wall through which water is coming out. If the size of hole becomes little larger, would the velocity of water coming out change? Would the volume of water coming out per second change?

When a source moves at a speed greater than that of sound, will Doppler formula hold? What will happen?

What is the principle of homogeneity of dimensions?

What is unified field theory?