What is the approximate sum of the following two vectors: magnitude 20 at 30° and magnitude 10 at 60°?
A. magnitude 29 at 40°
B. magnitude 30 at 30°
C. magnitude 30 at 90°
D. magnitude 40 at 90°
Answer: A
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A 1.00 cm diameter circular gauge block is used to measure the depth of a 60° notch in a piece of tool steel. The gauge block extends a distance of 4.7 mm above the surface. How deep is the notch? See Figure 4.16.
 FIGURE 1.png)
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Advective freezes occur on cool, clear nights
Indicate whether the statement is true or false
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Telephone surveys tend to sample _____ more since they tend to be home more often and answer the phone more often
a. children b. teenagers c. men d. women
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An example of a plant with aerial roots is a(n) _____
A) orchid B) corn plant C) carrot D) tree
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