Figure 1 shows a metal cube of mass 1.75g placed between the jaws of a micrometer screw gauge.

      

Figure 1 shows a metal cube of mass 1.75g placed between the jaws of a micrometer screw gauge.
11microscxrew4182017956.jpg
The magnified portion of the scale is also shown. The reading on the guage when the jaws were fully closed without the cube was 0.012 cm. Use this information and the figure to answer questions a) and b)
a) What is the length of the cube?
b) Determine the density of the metal cube giving your answer correct to three significant figures

  

Answers


John
a) Reading = 5.5 + (0.01 x 12) = 5.62 mm,

5.62 - 0.12 = 5.5 mm

b) Density = $\frac{m}{v}{$ = $\frac{1.75}{(0.550)^3}$ = 10.52g/cm3
johnmulu answered the question on April 18, 2017 at 09:48


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