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Chapter 1: Q9. (page 18)
What, approximately, is the percent uncertainty for a measurement given as?
The correct answer of percent uncertainty is 0.6%.
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Many sailboats are docked at a marina 4.4 km away on the opposite side of a lake. You stare at one of the sailboats because, when you are lying flat at the water’s edge, you can see its deck but none of the side of the sailboat. You then go to the sailboat on the other side of the lake and measure that the deck is 1.5 m above the level of the water. Using Fig. 1-16, where h = 1.5 m, estimate the radius R of the earth.
Why is it incorrect to think that the more digits you include in your answer, the more accurate it is?
A student’s weight displayed on a digital scale is. This would suggest her weight is(a) withinof.(b) exactly.(c) somewhere betweenand.(d) somewhere betweenand.
The following formula estimates an average person’s lung capacity V(in litres, where):
,
Where H and A are the person’s height (in metres) and age (in years) respectively. In this formula, what are the units of the numbers 4.1, 0.018, and 2.7?
Estimate how many books can be shelved in a college library with 3500 m2 of floor space. Assume 8 shelves high, having books on both sides, with corridors 1.5 m wide. Assume books are about the size of this one, on average.
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