In Fig. 1.1, the boxes show terms on the left and examples of those terms on the right. Draw a line from each left-hand term to the matching example on the right.
A set of experimental measurements is described as precise and not accurate. State what is meant by precise.
A set of experimental measurements is described as precise and not accurate. State what is meant by not accurate.
An object of mass $m$ moves with speed $v$ in a circle of radius $r$. The force $F$ on the object is given by $F = \frac{mv^2}{r}$. The percentage uncertainties of three of the quantities are given. The value of $v$ is found from $F$, $m$ and $r$. Calculate the percentage uncertainty in $v$.
The value of $v$ is $15.0\,\text{m s}^{-1}$. Calculate the absolute uncertainty in $v$.