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Physics 1989 JAMB Past Questions

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1
Which of the following is a set of vectors?
  • A. force, mass and moment
  • B. acceleration, velocity and moment
  • C. mass, weight and density
  • D. mass, volume and density
View Answer & Discuss (5) JAMB 1989
2
The magnitude of the resultant of two mutually perpendicular forces, F1 and F2 is 13N, if the magnitude of F1 is 5N, what is the magnitude of F2?
  • A. 2.6N
  • B. 6.0N
  • C. 12.0N
  • D. 18.0N
View Answer & Discuss (5) JAMB 1989
3
Two points on a velocity time-graph have coordinates (5s, 10ms-1) and (20s, 20ms-1). Calculate the mean acceleration between the two points
  • A. 0.67ms-1
  • B. 0.83ms-1
  • C. 1.50ms-1
  • D. 2.00ms-1
View Answer & Discuss (5) JAMB 1989
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4
A thin film of liquid is trapped between two glass plates. The force required to pull the plates apart will increase if the
  • A. surface tension of the liquid is reduced
  • B. perpendicular distance between the plates is increased
  • C. area of the liquid surface in contact with the plates is increased
  • D. pressure of the air is decreased
View Answer & Discuss (5) JAMB 1989
5
A block-and-tackle system is used to lift a load of 20N through a vertical height of 10m. if the efficiency of the system is 40%, how much work is done against friction?
  • A. 80J
  • B. 120J
  • C. 300J
  • D. 500J
View Answer & Discuss (9) JAMB 1989
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