Amechanical wave may be described as a disturbance that is transported through a medium via the mechanism of particle-to-particle interaction. which of these is not classified as a mechanical wave? a) earthquake b) light c) sound d) water

B)light

Explanation:

Light is an electromagnetic wave. Electromagnetic waves are oscillations of electric and magnetic fields that propagate in the space, carrying energy. Electromagnetic waves are NOT mechanical waves: in fact, they do not a medium to propagate, as they can also travel through a vacuum.

Electromagnetic waves are also transverse waves, which means that the oscillations of the electric and magnetic fields occur in a direction perpendicular to the direction of propagation of the wave itself.

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.