BMAT 2005 Section 2 Question 18
A sample of rock contains 235U and 207Pb in the proportion one part 235U to seven parts 207Pb. It is known that 235U decays to 207Pb with a half life…
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5 January 2024
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)…
5 January 2024
BMAT 2005 Section 2 Question 16
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…
5 January 2024
BMAT 2005 Section 2 Question 15
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…
5 January 2024
BMAT 2005 Section 2 Question 14
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…
5 January 2024
BMAT 2005 Section 2 Question 13
Rearrange the following equation to give x in terms of y. Answer: 13) A y = ⎡x² + 2ax⎤½ ⎣ b ⎦ y²…
5 January 2024
BMAT 2005 Section 2 Question 12
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…
5 January 2024
BMAT 2005 Section 2 Question 11
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…
5 January 2024
BMAT 2005 Section 2 Question 10
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…
5 January 2024
BMAT 2005 Section 2 Question 9
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%…
5 January 2024