Describe the phases that appear as an iron-0.5 weight percent carbon alloy is slowly cooled from the meltingtemperature. describe the compositions of the phases and weight fractions of each phase at each of thefollowing temperatures: 1470°c, 1100°c, 740°c, and 500°c. at what temperature will the austenitephase in this alloy have the highest carbon content? when the alloy is held at 700 c, what is the weightfraction of the ferrite phase that formed inthe alloy before the eutectoid reaction had taken place?

the answer is a)

mark brainliest

unlike poles attract

the higher the current the higher the mag field around it the higher the influence on the compass

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.