____ nails are made from hardened steel to prevent them from bending when being driven into concrete or other masonry.

a.Masonry
c.Brad
b.Duplex
d.Roofing


ANS: A

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A full-wave rectifier has a DC output voltage during one-half of the AC input voltage.

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

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In an experiment, a sphere of crystalline sodium chloride (NaCl) was suspended in a stirred tank filled with water at 20°C. Its initial mass was 100 g. In 10 minutes, the mass of the sphere was found to have decreased by 10 percent. The density of NaCl is 2160 kg/m3. Its solubility in water at 20°C is 320 kg/m3. Use these results to obatin an average value for the mass transfer coefficient.

What will be an ideal response?

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List some examples of benefits of genetic engineering in livestock production

What will be an ideal response?

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Transformers ________

A) convert a higher voltage into a lower voltage B) match the impedance of a source to the impedance of a load C) convert a lower current into a higher current D) all of these

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