From a fixed point on the ground, the distance to a certain tree is measured to be s = 55.2 ± 0.1 m and the angle from the point to the top of the tree is measured to be ? = 0.50 ± 0.02 radians. The height of the tree is given by h = s tan ?.
a. Estimate h, and find the uncertainty in the estimate.
b. Which would provide a greater reduction in the uncertainty in h: reducing the uncertainty in s to 0.05 m or reducing the uncertainty in ? to 0.01 radians
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Erosion protection may be required during which of the following steps of the construction process?
a. while topsoil is being removed b. after rough grading c. after final grading d. all of the above
Which of the following is NOT one of the major sets of forces that have shaped
management thought over the years?
a. Economic b. Social c. Political d. Technical e. These have all influenced management thought.
A map that shows water, relief, and culture is known as a:
a. Military map b. Topographic map c. Nautical map d. Cadastral map e. Engineering map
To control the amount of metal buildup when performing flat fillet welds with GMAW, the welder should
_____. a. cool the practice coupon in water b. clean the weld with solvent c. increase or decrease the travel speed d. run the root pass with a 90-degree work angle