1

Deionized water does not conduct electricity because it lacks ions, or charged particles. However, if a little table salt (NaCl) is added to deionized water, the resulting solution will conduct electricity.

What could be done to increase the conductivity of a salt water solution even further?

A.

add more salt to the water

B.

double the amount of both salt and water

C.

add more water

D.

remove salt from the water

( ._.)

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.