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Chapter 1: Q61E (page 9)

Soccer is played with a round ball having a circumference between 27 and 28 in. and a weight between 14 and 16 oz. What are these specifications in units of centimeters and grams?

Short Answer

Expert verified

68-71cm, 400-450g.

Step by step solution

01

Common conversion factor:

02

Unit conversion factor for inches to cm:

If there are two equivalent amounts that are symbolized in different measuring units in a ratio format, then it is called a unit conversion factor.For example, the lengths of 2.54 cm and 1 in. are equivalent (by definition). Hence the ratio can be used to calculate a unit conversion factor.

\(\frac{{2.54\,{\rm{cm}}}}{{1\,{\rm{in}}}}\) (2.54cm per 1 in).

03

 Step 3: Unit conversion factor for oz to grams:

If there are two equivalent amounts that are symbolized in different measuring units in a ratio format, then it is called a unit conversion factor. The conversion factor of oz to grams is 28.34gms to 1 oz.

\(\frac{{28.34{\rm{gm}}}}{{1\,{\rm{oz}}}}\)(28.34g per 1 in)

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Most popular questions from this chapter

Consider the results of the archery contest shown in this figure.

(a) Which archer is most precise?

(b) Which archer is most accurate?

(c) Who is both least precise and least accurate?

Give the name of the prefix and the quantity indicated by the following that are used with SI base units.

  1. c
  2. d
  3. G
  4. k
  5. m
  6. n
  7. p
  8. T

Question: Make the conversion indicated in each of the following:

(a) the length of a soccer field, 120 m (three significant figures), to feet

(b) the height of Mt. Kilimanjaro, at 19,565 ft the highest mountain in Africa, to kilometers

(c) the area of an 8.5 脳 11-inch sheet of paper in cm2

(d) the displacement volume of an automobile engine, 161 in.3, to liters

(e) the estimated mass of the atmosphere, 5.6 脳 1015 tons, to kilograms

(f) the mass of a bushel of rye, 32.0 lb, to kilograms

(g) the mass of a 5.00-grain aspirin tablet to milligrams (1 grain = 0.00229 oz)

Question: In a recent Grand Prix, the winner completed the race with an average speed of 229.8 km/h. What was his speed in miles per hour, meters per second, and feet per second?

Does the standard enthalpy of formation of \({{\bf{H}}_{\bf{2}}}{\bf{O}}\left( {\bf{g}} \right)\)differ from 螖H掳 for the reaction \({\bf{2}}{{\bf{H}}_{\bf{2}}}\left( {\bf{g}} \right){\bf{ + }}{{\bf{O}}_{\bf{2}}}\left( {\bf{g}} \right) \to {\bf{2}}{{\bf{H}}_{\bf{2}}}{\bf{O}}\left( {\bf{g}} \right)\)?
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