4. What is malleability?
A) The ability of steel to stretch.
B) The ability of steel to be shaped.
C) The process of heating steel to induce a change in
properties
D) A measure of how much work it takes to break a
sample of steel

The answer is B malleability is the ability to shape.

Explanation:

sonar - device which is used to find the submit submarines, sankalp ship. sonar waves consists of a transmitter and detector which are installed in the observation centre on board of a ship. the ultrasonic waves are sent into the sea at high frequency about 1000 khz in all direction.

molecules are free to separate from each other and will take on the shape of the container. molecules move completely at random and high speeds. they vibrate in a fixed position and do not move around much. molecules expand to the edge of their container.