Question 1
Paper 2Medium6 marksA pump transfers liquid into a container. For its flow rate is modelled by
where is the time in minutes since the pump starts. Let litres be the total volume transferred by time
(a)[2]
Show that
(b)[1]
Calculate the volume transferred in the first minutes. Give your answer to three significant figures.
(c)[3]
Determine the time at which L has been transferred. Explain why any other mathematical solution is not relevant.