Trace the connection between Friedrich Meischer and DNA
What will be an ideal response?
ANS:
In 1867, Friedrich Meischer observed that the nuclei of all cells contain a slightly acidic substance. He named the substance nucleic acid. Later, the name was expanded to deoxyribonucleic acid, or DNA.
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Poured-in-place insulation is usually made up of vermiculate or perlite.
Answer the following statement true (T) or false (F)
If a motor is to be connected to high voltage, the phase windings will be connected in ____.
a. series b. parallel c. wye d. delta
The high-voltage service plug assembly contains a ____ switch, which is opened when the clip on the high-voltage service plug is lifted.
A. safety interlock pin B. safety control reed C. safety interlock reed D. safety displacement lock
Compute the resistance of a copper bar 10 ft long with a cross sectional area of 1 in. × 1 in. The resistivity of copper is 10.37 CM-?/ft
What will be an ideal response?