What design principles should you consider when designing something to be controlled by the hand?
What will be an ideal response?
Designers should consider the following list of design principles when designing something to be controlled by the hand. Consider the capability of the target population to:
1. Use a neutral hand position
2. Avoid tissue compression
3. Protect the palm of the hand
4. Avoid repetitive finger action
5. Maximize grip strength
6. Plan for safe use
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The composition of an insulating material is such that its solid constituents trap air (or gas) in extremely small volumes. Why does the entrapment of large volumes of air (or gas) reduce the insulating property of the material?
What will be an ideal response?
What is the current draw of a 120-V circuit with a resistance of 20?
A) 20/120 V = 0.17 A B) 120 V + 20 = 140 A C) 120 V × 20 = 2,400 A D) 120 V/20 = 6 A
Two-way beam-and-slab floors normally require support by beams and walls _____.
a. along the perimeter and midline of the slab b. at 20-foot intervals across the shortest dimension c. only at the perimeter d. at 20-foot intervals across the longest dimension
Which of the following terms means disease-causing agent?
a. Zoonotic b. Pathogen c. Pandemic d. Yersinia