5.5 A two-cylinder waterpump is running at 120 r/min. The diameter of the plunger is 150
mm and the stroke length is 250 mm.
Calculate the following:
5.5.1 The volume of water delivered in litres every second

The volume of water delivered in litres every second.
(4)

Which statement correctly describes the relationship between frequency and wavelength?

The period of a pendulum varies directly as the square root of the length of the pendulum and inversely as the square root of the acceleration due to gravity. find the period when the length is 144 cm and the acceleration due to gravity is 980 cm per second squared, if the period is 7pi seconds when the length is 289 cm and the acceleration due to gravity is 980 cm per second squared.

The radius of an atom is closest in size to a