Ordinary level 2023 northwest regional mock physics 2
Ordinary level 2023 northwest regional mock physics 2
(a)Define energy’.
(b) Joan moves from the ground floor of a storey buildingto the first floor ofheig t tn.
(i) State the energy changes involved.
(ii)Ifhermass is 50kg,calculate the work done inthe process.
(iii)A bulbis rated 25 W.Explainthe meaningofthe statement. . .
3.(a) Sketch two separate diagrams to show how two forces of 3.0N and 4.0N can act on an object in order to produce
aresultantforce of:
(i)1.0Nupward.
,(ii) 5.0N.
(b) A car starts from rest and accelerates uniformly at4ms~2 for 3 s to amaximum velocity. The drive maintain the
maximum velocity for 7s before finally,goingto rest with uniform deceleration in the next 5 s.
(i) Calculatethe maximum velocity attained.
(ii) Sketch the velocity-time graph for the entire motion.Indicate useful values on both axes.
(iii) Use the graph to calculate the distance covered duringthe decelerated motion.
4.(a) What is charging? … *
(b) A glassrodisrobbed with a dry cloth. State the type ofcharge acquired by the rod.
(c) With the aid of a diagram, describe how the glass rod can be used to separate the
charges in bodies A and B in contact as shown in figure 2 below,-each placed on an
insulating stand.
(d) Whichmethod of charging is described in (c) above?
5.(a) Stale the fundamental particle that is positively charged;
(4 marks)
(1mark)
(1mark)
(b) State the difference between a1 conductor and a semiconductor in terms of the
particles responsible for conduction in each. (2 marks)
(c) Whatisthe name given to a pure semiconductor? (1mark)
6.In order to produce a spectrum of white light,Nkeh incident a beam of white light
glass prism as shown in figure 3 below* =
on a
