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96
The body P shown in the diagram above is in equilibrium. If the mass Q of the body is 10kg, calculate the tension T in the string. (Take g = 10ms2)
  • A. 20/√3N
  • B. 20N
  • C. 50N
  • D. 200√3N
  • E. 200N
View Answer & Discuss (6) WAEC 1990
97
An object weighs 10.0 N in air and 7.0 N in water. What is its weight when immersed in a liquid of relative density 1.5?
  • A. 4.50N
  • B. 4.67N
  • C. 5.50N
  • D. 6.67N
  • E. 8.50N
View Answer & Discuss (5) WAEC 1990
98
The absolute zero temperature is defined as the temperature at which
  • A. thermal motion ceases
  • B. the temperature of a gas is 273oC
  • C. ice melts
  • D. the volume of a real gas is maximum
  • E. the pressure of a real gas is maximum
View Answer & Discuss WAEC 1990
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99

A cube made of a metal of linear expansivity is warmed through a temperature of t. lf the initial volume of the cube is V what is the increase in volume of the cube?

  • A. 1/3α Vt
  • B. 1/2α Vt
  • C. α Vt
  • D. 2α Vt
  • E. 3α Vt
View Answer & Discuss (5) WAEC 1990
100
Dry hydrogen is trapped by pellet of mercury in a uniform capillary tube closed at one end. If the length of the column of hydrogen at 27°C is 1.0m, at what temperature will the length be 1.20m?
  • A. 22.5oC
  • B. 32.4oC
  • C. 77.0oC
  • D. 87.0oC
  • E. 360.0oC
View Answer & Discuss (3) WAEC 1990
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