Answer the following statement(s) true (T) or false (F)

1.When using a circular saw, you want to position yourself directly behind the saw, not to the side of the saw.
2.Stranded wire has a slightly smaller diameter than solid wire.
3.When using a reciprocating saw (Sawzall®) to cut metal, the blade should be operated at a slower speed than when cutting wood.
4.Always unplug a corded power tool, or remove the battery from a cordless power tool, before you make any adjustments, change accessories, or store the tool.


1.false
2.false
3.true
4.true

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A cool early spring breeze passes over the roof of a poorly-insulated home. The surface area of the roof is 250 m2, and the temperature of the roof is maintained at 20°C from heat escaping the house. The air temperature is 5.0°C, and the convective heat transfer coefficient is 12.0 W/m2-K. Determine the rate of convective heat transfer from the roof.

Given: A = 250 m2; Tf = 5.0°C; Ts = 20°C; h = 12.0 W/m2-K What will be an ideal response?

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The inside of a dirty engine can harbor hazardous waste.

Answer the following statement true (T) or false (F)

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On a small gas engine, how often should the oil be changed?

a. after every 5 hours of use c. after every 100 hours of use b. after every 25 hours of use d. after every 200 hours of use

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What are identification numbers?

What will be an ideal response?

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