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They're both the same. The feathers would take up a lot more space though! Feathers have a lower density than lead (i.e. for the same volume, feathers are less heavy). In practice, if you drop a tonne of ...

Okay, first, we will tackle this by using the information given to us (z=6) to solve for p. By substituting 6 wherever there is a z, we will end up with 216 - 360 + 222 + p = 0.Solving this through rearra...

7 x £0.87 = £6.09(6.09/5.97) x 100 = 102.01%so percentage profit is 2.01% to 2 d.p.

Different revision techniques work for different people, but I find that employing a variety of different methods is often the best way to ensure that the most information information is retained. When st...

The basic expectation of any examiner when marking a source-based question is whether you have identified the value of the source to an historian with reference to the relevant historical context...