The yield strength for fe that has an average grain diameter of 1 x 10-2 mm is 230 mpa. at a grain diameter of 6 x 10-3 mm, the yield strength increases to 275 mpa. at what grain diameter will the yield strength be 310 mpa? (b) a specimen of steel with kic = 54.8 mpa-m1/2 and ys = 1400 mpa is loaded in tension. if this specimen has an internal crack, 2a = 0.4 mm, will it fail after plastic deformation or by brittle fracture? assume y=1.0.

note: the given question is incomplete.

complete question is given below.

which is an example of kinetic energy?

a. the energy stored in ethanol  

b. a hockey puck sliding across the ice  

c. a compressed spring  

d. a ball sitting at the top of a ramp

solution: the kinetic energy is the energy posses by the virtue of the motion of the object.

in the given options, a, c and d are the example of potential energy because it is the energy posses by the virtue of the rest of the object. but option b has the kinetic energy as the object is in motion.

hence, a hockey puck sliding across the ice   is the apex example of kinetic energy.

so, the option (b) a hockey puck sliding across the ice   is the correct option.