Past Questions And Answers
(a) State the conditions of equilibrium for a number of coplanar parallel forces.
(b) A metre rule is found to balance horizontally at the 48 cm mark. When a body of mass 60 g is suspended at the 6 cm mark, the balance point is found to be at the 30 cm mark. Calculate the;
(i) mass of the metre rule;
(ii) distance of the balance point from the zero end, if the body were moved to the 13 cm mark.
(c) a man pulls up a box of mass 70 kg using an inclined plane of effective length 5 m unto a platform 2.5 m high at a uniform speed. If the frictional force between the box and the plane is 1000 N;
(i) draw a diagram to illustrate all the forces acting on the box while in motion;
(ii) calculate the I. minimum effort applied in pulling up the box; II. velocity ratio of the plane, if it is inclined at 30° to the horizontal; Ill. force ratio of the plane.
View Discussion (0)WAEC 2007 THEORY.jpeg)
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A supply curve parallel to the X- axis indicates?
- A. fairly elastic supply
- B. infinitely elastic supply
- C. fairly inelastic supply
- D. perfectly inelastic
(a)
Calculate the area of the shaded segment of the circle shown in the diagram [Take \(\pi = \frac{22}{7}\)]
(b) A tin has radius 3cm and height 6cm. Find the (i) total surface area of the tin ; (ii) volume, in litres, that will fill the tin to capacity, correct to two decimal places.
[Take \(\pi = \frac{22}{7}\)]
View Discussion (0)WAEC 1992 THEORYWhich software application is used for accessing sites or information on a network (as the World Wide Web)?
- A) Operating System
- B) Web Browser
- C) Microsoft Word
- D) Microsoft Excel
From the graph above, fixing maximum price of garri below equilibrium prices at P1 will
- A. Encourage the production of garri
- B. Create an excess supply of garri
- C. Increase the consumption of garri
- D. Decrease the consumption of garri
Concentrating industries in one place is advantageous because there are gains in terms of_____________
- A. cost economies
- B. economies of scale
- C. internal economies
- D. external economies
From the alternative provided in the question below select the one which is most appropriately completes the sentence: If the armed robbers ... caught, they would have been lynched.
- A. would be
- B. have been
- C. are
- D. had been
The enzyme that acts on milk in the stomach is
- A. invertase
- B. trypsin
- C. diastase
- D. renin
Obadiah, Ahab's servant, made history for himself by
- A. arresting the prophets of Yahweh
- B. executing all the prophets
- C. hiding and feeding some of the prophets in a cave
- D. inciting the prophets to rebel against king Ahab
Select the option that best explains the information conveyed in the sentence. The footballers moved with their tails between their legs?
- A. They moved happily because they won the match
- B. They were unhappy because they had been despised by their opponents
- C. They were ashamed because they had been defeated
- D. They moved with their tails between their legs