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1401
A rocket burns fuel at the rate of 10kgs-1 and ejects it with velocity of 5 x 103ms-1. The thrust exerted by the gas on the rock is
  • A. 2.5 x 107N
  • B. 5.0 x 104N
  • C. 5.0 x 102N
  • D. 2.0 x 10-3N
View Answer & Discuss (7) JAMB 1993
1402
The force experienced by an object of mass 60.0kg in the moon's gravitational field is 1.002 x 102N. What is the intensity of the gravitational field?
  • A. 0.60Nkg-1
  • B. 1.67Nkg-1
  • C. 6.12 x 102Nkg-1
  • D. 9.81ms-2
View Answer & Discuss (5) JAMB 1993
1403

Which of the following correctly describes the energy changes in the generation of light by a hydroelectric power station?

  • A. Electrical \(\to\) mechanical \(\to\) potential
  • B. potential \(\to\)mechanical \(\to\)electrical \(\to\) light
  • C. mechanical \(\to\) sound \(\to\) electrical \(\to\) light
  • D. kinetic \(\to\) mechanical \(\to\) electrical \(\to\)light
View Answer & Discuss (16) JAMB 1993
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1404
A plane inclined at angle \(\theta\) has a velocity ratio of 10 : 1. The inclination of the plane to the horizontal is given by
  • A. tan\(\theta\) = \(\frac{1}{10}\)
  • B. cot\(\theta\) = \(\frac{1}{10}\)
  • C. cos\(\theta\) = \(\frac{1}{10}\)
  • D. sin\(\theta\) = \(\frac{1}{10}\)
View Answer & Discuss (4) JAMB 1993
1405

A weightless vessel of dimensions 4m x 3m x 2m is filled with a liquid of density 1000kgm\(^{-3}\) and sealed. What is the maximum pressure this container can exert on a flat surface? [g = 10ms\(^{-2}\)]

  • A. 9 x 104Nm-2
  • B. 4 x 104Nm-2
  • C. 3 x 104Nm-2
  • D. 2 x 104Nm-2
View Answer & Discuss (22) JAMB 1993
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