Exam-style questions in the shape of Paper 1 and Paper 2, with full markschemes. Read the markscheme, or type, photograph or draw your answer and get it marked.
A circular inspection window has a radius recorded as correct to the nearest
For this question, percentage error is
Write down the lower and upper bounds for the radius.
Calculate the estimated area of the window, giving your answer to three significant figures.
Determine the greatest possible percentage error in this estimated area. Use unrounded values in your calculations and give your answer to three significant figures.
A comet lander collects dust during a -minute sampling pulse. Figure 1 shows the rate at which particles enter the collection chamber. Assume that varies linearly between consecutive readings. The mean mass of a particle is
Determine the total mass of dust collected during the pulse. Give your answer in scientific notation to 2 significant figures.
A return canister has a maximum dust payload of Is it sufficient for the dust collected during the full pulse? Justify your answer with a numerical comparison.
A remote-sensing archive receives data from two instruments. Instrument A records observations, each requiring bytes. Instrument B produces bytes of data. The archive has bytes of free space. Each additional storage module can hold at most bytes.
Show that the data from Instrument A require bytes. Give your answer in scientific notation.
Determine the least number of additional storage modules required to store all the data from both instruments. Justify that this number is least.
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