In an experiment to determine relative velocities of a feather ball and anvil what is the object called control variable dependent variable independent variable relative variable

When at a point two solid phase changes to one solid phase on cooling then it is known as a) eutectoid point b) eutectic point c) peritectic point d) peritectoid point

If you were designing a bumper for a car, would you prefer it to exhibit elastic or plastic deformation? why? consider the functions of a bumper in both a minor "fender-bender" and a major collision.

Draw the engineering stress-strain curve for (a) bcc; (b) fcc metals and mark important points.