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746
A force of 20 N applied parallel to the surface of a horizontal table, is just sufficient to make a block of mass 4kg move on the table. Calculate the coefficient of friction between the block and the table. (g = 10ms2)
  • A. 0.05
  • B. 0.20
  • C. 0.50
  • D. 0.80
  • E. 2.00
View Answer & Discuss WAEC 1992
747
A barometer can be used in determining the I. height of a mountain II. depth of a mine III. dew point. Which of the following is/are correct?
  • A. I, II and III
  • B. II and III only
  • C. I and III only
  • D. I and II only
  • E. III only
View Answer & Discuss (2) WAEC 1992
748

A body of mass 5kg falls from a height of 10m above the ground. What is the kinetic energy of the body just before it strikes the ground? (Neglect energy losses and take gravity as 10ms^2)

  • A. 5J
  • B. 25J
  • C. 250J
  • D. 500J
  • E. 625J
View Answer & Discuss (4) WAEC 1992
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749
Steel bars, each of length 3.0 m at 28°C, are to be used for constructing a rail line. If the linear expansivity of steel is 1.0 x 10-5°C, what is the safety gap that must be left between successive bars if the highest temperature expected is 40oC?
  • A. 1.2 x 10-1cm
  • B. 8.4 x 10-2cm
  • C. 7.2 x10-2cm
  • D. 3.6 x 10-2cm
  • E. 1.8 x 10-2cm
View Answer & Discuss (4) WAEC 1992
750

Which of the following statements is/are correct? I. Pure water freezes at 0ºC under normal pressure ll. Water has its highest density at 4ºC. III. The volume is highest at 4ºC,

  • A. I only
  • B. II only
  • C. I and II only
  • D. I and III only
  • E. II and III only
View Answer & Discuss (5) WAEC 1992
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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
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