Sample of 100 test specimen break tests of a steel alloy provides the following breaking strenths. Assuming thatthe breaking strength of samples in each range is actually at the minimum of the range, determine the meanbreaking strength and standard deviation of the sample. Using the same conservative assumption, determine thebreaking strength above which 95% of the sample values in the set are expected to fall.

On a horizontal frictionless surface, a small block with mass 0.200 kg has a collision with a block of mass 0.400 kg. immediately after the collision, the 0.200 kg block is moving at 12.0 m/s in the direction 30° north of east and the 0.400 kg block is moving at 11.2 m/s in the direction 53.1° south of east. use coordinates where the +x-axis is east and the +y-axis is north.(a) what is the total kinetic energy of the two blocks after the collision (in ) what is the x-component of the total momentum of the two blocks after the collision? (indicate the direction with the sign of your ) what is the y-component of the total momentum of the two blocks after the collision? (indicate the direction with the sign of your answer.)