I am a teacher and need help creating exam problems. Please recommend more incorrect answers to the following problem but do not explain your logic. At a point subjected to plane stress on the surface of a ladder rung, the stresses are σx = –140 psi, σy = 0 psi, and τxy = –55 psi. Determine the angle θs corresponding to the orientation of the maximum in-plane shear stress at the point.

I am a teacher and need help creating exam problems. Please recommend more incorrect answers to the following problem but do not explain your logic. At a point in a body subjected to plane strain, the strains are εx = 230 με, εy = –660 με, and γxy = –170 μrad. Determine normal strain εn at the point for a clockwise coordinate rotation of 11°.

Create 5 variations of the following problem but do not show the answers. At a point subjected to plane stress on the surface of a structural-steel member, the stresses are σx = 30 MPa, σy = –100 MPa, and τxy = 30 MPa. Determine the radius R of the corresponding in-plane Mohr’s circle.

Create 5 variations of the following problem but do not show the answers. At a point subjected to plane stress on the surface of a structural-steel member, the stresses are σx = 9 ksi, σy = 19 ksi, and τxy = –4 ksi. Determine the center σcenter of the corresponding in-plane Mohr’s circle.

Create 5 variations of the following problem but do not show the answers. At a point in a body subjected to plane strain, the strains are εx = 300 με, εy = 70 με, and γxy = –500 μrad. Determine the angle θp corresponding to the orientation of the principal planes at the point.

Each of the following are needed for the testing behavior to be considered secure. By checking the following you are acknowledging that you will adhere to each behavior:

Why is flow sensor calibration important?

A patient receiving APRV has worsening oxygenation. Which setting would MOST directly improve alveolar recruitment?

The basic idea of ___________ is that relaxation and fear are incompatible, and therefore we can replace a conditioned fear response with a conditioned relaxation response to treat various disorders. 

There are three organ systems that work together to protect our bodies. Which organ system protects us from infection, injury, and cancer?