Suppose that a wing component on an aircraft is fabricated from an aluminum alloy that has a plane strain fracture toughness of 26 MPa (23.66 ksi). It has been determined that fracture results at a stress of 111 MPa (16100 psi) when the maximum internal crack length is 7.6 mm (0.2992 in.). For this same component and alloy, compute the stress level at which fracture will occur for a critical internal crack length of 6.2 mm (0.2441 in.).

the equation above shows how temperature f, measured in degrees fahrenheit, relates to a temperature c, measured in degrees celsius. based on the equation, which of the following must be true?

a temperature increase of 1 degree fahrenheit is equivalent to a temperature increase of

5

9

degree celsius.

a temperature increase of 1 degree celsius is equivalent to a temperature increase of 1.8 degrees fahrenheit.

a temperature increase of

5

9

degree fahrenheit is equivalent to a temperature increase of 1 degree celsius.

a) i only

b) ii only

c) iii only

d) i and ii only

answer:

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explanation:

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answer:

explanation: