The period T of a simple pendulum is given by
where L is the length of the pendulum and g is the acceleration due to gravity.
a. Assume exactly, and that L=0.742 ± 0.005 m. Estimate T, and find the uncertainty in the estimate.
b. Assume L=0.742 m exactly, and that T=1.73 ± 0.01 s. Estimate g, and find the uncertainty in the estimate.
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In the stud-weld symbol, the number of stud welds is placed in parentheses ____ the symbol.
A. above B. below C. to the left D. to the right
Wayne wants to plant 42 acres of peanuts. Hehas the field shown in Figure 9-1.
a. How many square yards are in the field?
b. Is he able to plant his crop of peanuts in the field?
c. Express the number of acres over or under using signed numbers.
Vitamin A is important in
A. Cellular metabolism B. Eyesight C. Healthy skin D. All of the above E. A and C above
Fiberglass, plastic, and ____ sinks are not easily recycled.
A. cast iron B. metal C. solid china D. porcelain