Awing component on an aircraft is fabricated from an aluminum alloy that has a plane strain fracture toughness of 26 mpa√m . it has been determined that the fracture results at a stress of 112 mpa when the maximum internal crack length is 8.6 mm. for this same component and alloy, compute the stress level at which fracture will occur for a critical internal crack length of 6.0 mm

193901.39793 Pa

Explanation:

a = Crack length

= Geometrical factor

= Applied stress = 112 MPa

Plane strain fracture toughness is given by

When a = 6 mm

the stress level at which fracture will occur is 193901.39793 Pa

i had this question and the answer was 3.15 miles.

martina travels from school to her mom's office. from there, she walks to school. after school, she walks to the library and then to a friends house before finally ending back at home. find martina's total distance traveled.

a) 0 miles  

b) 0.4 miles  

c) 1 mile  

d) 3.15 miles

the doppler effect is used by weather forecasters to measure 

moving clouds