An aircraft component is fabricated from an aluminum alloy that has a plane strain fracture toughness of 39 . it has been determined that fracture results at a stress of 208 mpa when the maximum (or critical) internal crack length is 2.82 mm. a) determine the value of for this same component and alloy at a stress level of 270 mpa when the maximum internal crack length is 1.41 mm.

The speed of light can be used to measure the

Anonzero net force acts on a particle and does work. which one of the following statements is true? the kinetic energy of the particle changes, but the speed of the particle does not change. the kinetic energy of the particle does not change, but the speed of the particle does change. the kinetic energy of the particle changes, but the velocity of the particle does not change. the kinetic energy and the speed of the particle change, but the velocity of the particle does not change. the kinetic energy, speed, and velocity of the particle change.

Why does magnet 5 float above magnet 4