BMAT 2005 Section 2 Question 17
Evaluate: Answer: 17) A We know the general quadratic formula (a – b)² = a² – 2ab + b² So we have, (√5 – √2)² = (√5)² – [2 (√5)…
Evaluate: Answer: 17) A We know the general quadratic formula (a – b)² = a² – 2ab + b² So we have, (√5 – √2)² = (√5)² – [2 (√5)…
The diagram shows three sections, separated by hinge-like joints, of the leg of a crab with an exoskeleton. By comparison with the elbow joint of a human, select the letters…
The reaction between nitrogen and hydrogen to form ammonia is exothermic The strengths of the bonds in the three molecules are as shown. Which statement can be deduced from this…
A pulse of frequency 100kHz is emitted from an ultrasound scanner, and is reflected from a fetus 10cm below the transmitter placed on the mother’s abdomen. The speed of sound…
Rearrange the following equation to give x in terms of y. Answer: 13) A y = ⎡x² + 2ax⎤½ ⎣ b ⎦ y²…
Which row of the table shows what occurs in the eye when you watch a bird flying away from you? Answer: 12) B Don’t worry if you do not know…
Which fraction is the percentage by mass of water of crystallisation in sodium carbonate decahydrate? (Relative atomic masses, Ar: Na=23; C=12; O=16; H=1) Answer: 11) D Sodium carbonate = Na₂CO₃…
A uniform beam of length 60cm weighs 10N. Its centre of gravity (the point where its weight can be assumed to act) is at its centre. A weight of 800N…
Two variables are connected by the relation: A∝ 1/B2 B is increased by 40%. Describe the change in A in percentage terms Answer: 9) C Increase by 40% = 140%…
The length of a person’s eyelashes is controlled by a single gene. The diagram shows the inheritance of this feature in a family. Which individual, A, B, C, D, or…