Explain the reason for having a grounding wire on portable power tools.

Consider the common practice of tethering tools used on scaffolds and elevated platforms to prevent them from falling. Attaching a tether to a railing of a guardrail is not recommended by the companies that make guardrails. Why do you think they object to this use of their railing? (Hint: Laws of energy conservation and conservation of momentum.) 

Your response must be at least 75 words in length.

Imagine that you coach a track team. You have three athletes who compete in the shot-put event. All three have good technique and achieve similar trajectory angles. One can put the shot farther than the others. Using the concepts of energy, work, and power, explain why he can outperform the others. 

Your response must be at least 75 words in length.

Explain the reason for having a grounding wire on portable power tools. 

Your response must be at least 75 words in length.

Explain what is meant by acclimatization. How would you apply this concept to a crew of temporary summer construction employees? 

Your response must be at least 75 words in length.

Explain the difference between fire prevention and fire protection. 

Your response must be at least 75 words in length.