A Rectangular Plate in Plane Stress Is Subjected to Normal $\sigma _ { x } = 35 \mathrm { MPa } , \sigma _ { y } = 26 \mathrm { MPa }$

question 1

Multiple Choice

A rectangular plate in plane stress is subjected to normal stresses $\sigma _ { x } = 35 \mathrm { MPa } , \sigma _ { y } = 26 \mathrm { MPa }$ , and shearstress $\tau _ { x y } = 14 \mathrm { MPa } .$ The ratio of the magnitudes of the principal stresses $\left( \sigma _ { 1 } / \sigma _ { 2 } \right)$ is approximately:

• A) 0.8
• B) 1.5
• C) 2.1
• D) 2.9

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Hemolymph

A fluid equivalent to blood in most invertebrates, occupying the hemocoel and performing similar transport functions.

Grasshoppers

Insects belonging to the suborder Caelifera, known for their powerful hind legs that allow them to leap and their role in various ecosystems as herbivores.

Hemoglobin

A protein in red blood cells that carries oxygen from the lungs to the body's tissues and returns carbon dioxide from the tissues back to the lungs.

Sinuses

Air-filled spaces located within the bones of the face and skull, connected to the nasal cavities, which help humidify and filter air.