6-5, Physical Science Questions 27 and 30

Qn. 27 (a) He should hang the 4 magnets from the same distance from the tray (1/2m) and then count the number of pins attracted to the magnets. (1/2m) (b) Observation 1 - More pins would be attracted to Magnet x. Observation 2 - MAgnet X can attract the same number of pins as Magnet A from a further distance from the tray. Qn 28 - P5 SA2 Question (2012) Qn. 29 (we've done this question a thousand times) (a) Q. Q is able to reflect light from the furthest distance. (b) By using the sensor, data collected would be more accurate as results would not just be subjected to what Zainal thinks the amount of light that is reflected. Qn. 30 (a) potential energy converted to kinetic energy converted to electrical energy (b) Advantage - to be able to generate greater amount of electricity Explanation - The water would possess greater amount of g.p.e which would then be converted to greater amount of k.e, which would then be converted to greater amount of electrical energy.