In the diagram above, O is the center of the circle QOR is a diameter and ∠PSR is 37°. Find ∠PRQ
37o
53o
65o
127o
147o
Correct answer is B
Construction: Join PQ.
Then < RSP = 37° = < RQP (angles on the same segment)
But < RPQ = 90° (angle in a semi-circle)
\(\therefore\) < PRQ = 180° - (90° + 37°)
= 53°
Which of the following is not an example of a force?
Tension
Weight
Friction
Mass
Thrust
Correct answer is D
No explanation has been provided for this answer.
In the diagram above, O is the center of the circle PQRS and ∠QPS = 36°. Find ∠QOS
36o
72o
108o
144o
288o
Correct answer is B
< QOS = 2 < QPS (angle subtended at the centre)
\(\therefore\) < QOS = 2 x 36° = 72°
F = EA/eI
F = EAI/e
F = EAe/l
F = EAe
Correct answer is C
E = Stress/Strain = F/A/e/L
E = FL/AE; F = EAe/L
carbohydrates and lipids
vitamins and proteins
lipids and proteins
water and sugar
starch and cellulose
Correct answer is C
No explanation has been provided for this answer.
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