30. Palm oil flows out more easily after it has been heated because the A. molecules...

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30. Palm oil flows out more easily after it has been heated because the A. molecules are given potential energy during the heating B. friction between oil layers is reduced C. oil molecules force each other out D. adhesion between the oil molecules and those of the bottle is increased E. oil is less sticy 31. A man of mass 65kg carrying a load of mass 25kg stands inside a lift. If the lift moves upwards with an acceleration of 5ms, calculate the magnitude of its reaction on the man. A. 325N B. 600N C. 900N D 1350N E. 2000N 32. A barometer can be used in determining the I. height of a mountain II. Depth of a mine. III. Dew point Which of these is/are correct? A. I, II and III B. II and III only C.I and III only D. I and II only E. none of the above 33. A rectangular block of dimensions 2.0m x1.0m x 0.5m weighs 200N. Calculate the maximum pressure exerted by the bloc on a horizontal floor. A. 100NM2 540NM B. 200NM C. 300NM D. 400NM E. 34. A faulty barometer reads 72.6cmHg when the atmospheric pressure is 75.0cmHg. Calculate the pressure when this barometer reads 72cmHg. C. 74.2cmHg D. 69.4cmHg A. 79.4cmHg 65cmHg B. 74.4cmHg E. 35. An object is situated within the Earth's gravitational field. Which of the following factors does not affect the acceleration of free fall, g? A. The distance of the object from the center of the Earth B. the latitude of the Earth on which the object is situated C. the mass of the object D. the rotation of the earth E. the shape of the object 36. A satellite is said to be in parking orbit when its period of revolution is A. equal to the period of rotation of the earth B. lower than the period of rotation of the earth C. greater than the period of rotation of the earth D. equal to the period of revolution of the earth E. negligible to the period of revolution of the earth 37. An engine raises 100kg of water through a height of 60m in 20s. What is the power of the engine? [take g = 10ms] A. 120000W В. 3000W С. 333W D. 300W Е. 350W 30. Palm oil flows out more easily after it has been heated because the A. molecules are given potential energy during the heating B. friction between oil layers is reduced C. oil molecules force each other out D. adhesion between the oil molecules and those of the bottle is increased E. oil is less sticy 31. A man of mass 65kg carrying a load of mass 25kg stands inside a lift. If the lift moves upwards with an acceleration of 5ms, calculate the magnitude of its reaction on the man. A. 325N B. 600N C. 900N D 1350N E. 2000N 32. A barometer can be used in determining the I. height of a mountain II. Depth of a mine. III. Dew point Which of these is/are correct? A. I, II and III B. II and III only C.I and III only D. I and II only E. none of the above 33. A rectangular block of dimensions 2.0m x1.0m x 0.5m weighs 200N. Calculate the maximum pressure exerted by the bloc on a horizontal floor. A. 100NM2 540NM B. 200NM C. 300NM D. 400NM E. 34. A faulty barometer reads 72.6cmHg when the atmospheric pressure is 75.0cmHg. Calculate the pressure when this barometer reads 72cmHg. C. 74.2cmHg D. 69.4cmHg A. 79.4cmHg 65cmHg B. 74.4cmHg E. 35. An object is situated within the Earth's gravitational field. Which of the following factors does not affect the acceleration of free fall, g? A. The distance of the object from the center of the Earth B. the latitude of the Earth on which the object is situated C. the mass of the object D. the rotation of the earth E. the shape of the object 36. A satellite is said to be in parking orbit when its period of revolution is A. equal to the period of rotation of the earth B. lower than the period of rotation of the earth C. greater than the period of rotation of the earth D. equal to the period of revolution of the earth E. negligible to the period of revolution of the earth 37. An engine raises 100kg of water through a height of 60m in 20s. What is the power of the engine? [take g = 10ms] A. 120000W В. 3000W С. 333W D. 300W Е. 350W