IB Measurements
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An atom has a diameter of approximately 10^{10} m, and a proton 10^{15} m.  
1. What is the approximate volume of a proton in meters cubed?


2. What is the approximate ratio between the diameter of an atom like hydrogen to the diameter of the nucleus?


3. Which of these answers contains only fundamental SI quantities?


4. Which of these answers correctly identifies fundamental SI units and derived units?


5. The watt is a derived unit. In SI fundamental units the watt is equivalent to..


6. The ratio between a MJ and a pJ is:


7. A moment (‘turning force’) has a unit of Nm. Which of these has the same base units as Nm?


8. A student takes measurements for the acceleration of gravity on Earth, and obtains the following results:
g = 10.55, 10.57, 10.44, 10.51 ms^{2} These results are


9. A student is measuring the length of a set of pipes. Unfortunately his ruler has been damaged and starts at 0.2cm, which he fails to notice. This damage causes

