Glass is called fourth state of matter. give reasons

Glass is a solid. It is a kind of solid known as “amorphous crystalline” which means it is substantially similar to familiar crystals such as quartz, diamond, and table salt. The only difference is that the molecules of glass have crystallized in a random arrangement instead of a repeating pattern like a basic crystal.

Explanation:

true is the correct answer

hope i

force is based upon mass and acceleration.the statement is not always true.

it can be explained from newton's second law of motion.

as per newton's second law of motion the rate of change of momentum is directly proportional to the applied force and takes place along the direction of force.

mathematically it can be written as -

                                              ⇒      

here   k is the proportionality constant whose value is 1.

                                                            [a is the acceleration=dv/dt]

hence we see that force not only depends on mass and acceleration but also on velocity and rate of change of mass. force f will depend on mass and acceleration only when mass is constant.

hence the statement that force is based upon mass and acceleration is false.