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691

The amplitude of the motion of a body performing simple harmonic motion decreases with time because

  • A. friction force dissipate the energy of motion
  • B. the frequency of oscillation varies with time
  • C. the period of oscillation varies with time
  • D. energy is supplied by some external agency
View Answer & Discuss (3) WAEC 2001
692
The amplitude of a particle executing simple harmonic motion in 5cm while its angular frequency is 10 rad s-1. calculate the magnitude of the maximum acceleration of the particle
  • A. 0.25ms-2
  • B. 0.50ms-2
  • C. 2.00ms-2
  • D. 5.00ms-2
View Answer & Discuss (8) WAEC 2001
693

The time rate of change of momentum is

  • A. impulse
  • B. force
  • C. power
  • D. pressure
View Answer & Discuss (6) WAEC 2001
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694

Which of the following statements about elastic collision is correct?

  • A. momentum is lost due to the sound produced
  • B. loss of momentim is equal to loss in kinetic energy
  • C. both kinetic energy and momentum are conserved
  • D. kinetic energy is lost while momentum is conserved
View Answer & Discuss (2) WAEC 2001
695

Electrical resistance is a property of an electrical energy to be converted into

  • A. mechanical energy
  • B. heat energy
  • C. magnetic energy
  • D. chemical energy
View Answer & Discuss (2) WAEC 2001
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