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12 Hydrogen is used as a fuel in rockets and is also used in hydrogen fuel cells. Which statements are correct? 1 Both uses produce water vapour. 2 Burning hydrogen produces polluting gases. 3 A fuel cell produces electricity. A 1, 2 and ...
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8 (a) Differentiate y = tan(x + 4) - 3 sin x with respect to x. (b) Variables x and y are such that y = 2e3x . Use differentiation to find the approximate change in y as x increases from 1 ...
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Diagram 8 shows two flavours of ice cream in cylindrical container. Two scoops of vanilla and one scoop of chocolate flavours put into an ice cream cone. Given the height and radius of the container are 7 cm and 14 ...
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Dalam rajah 2, O ialah asalan. Titik P terletak pada paksi-y dan titik Q terletak pada paksi-x. Garis lurus QR adalah selari dengan paksi-y dan garis lurus PQ adalah selari dengan garis lurus RS. Persamaan garis lurus PQ ialah 2x+y=10. a. ...
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Rajah 2(a) di nawab menunjukkan sebum logo yang digunakan dalam satu pertandingan menghafal nombor Pi. Huruf P dalam sembol tersebut diterapkan semula seperti dalam Rajah (2b). Diberi titk A, B and C beard pada Lilian bulatan dan CDO adalar jhejari ...
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