By J O Bird
An advent to middle arithmetic required for engineering learn comprises multiple-choice questions and solutions, labored difficulties, formulae, and exercises.
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Extra resources for Engineering mathematics
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6)2 Problem 18. Velocity v is given by v = u + at . 84 s, find v, correct to 3 significant figures. 49 × 10−11 newtons, correct to 3 significant figures. 9 m/s, correct to 3 significant figures. Problem 19. The power, P watts, dissipated in an electrical circuit may be expressed by the formula V2 . 12 . 46 W, correct to 3 significant figures. Problem 22. 950 seconds, correct to 3 decimal places. Problem 23. Resistance, R , varies with temperature according to the formula R = R0 (1 + αt ). 0043 and t = 80.
The current I amperes flowing in a number nE of cells is given by I = . Evaluate R + nr the current when n = 36. 81 A] 13. The time, t seconds, of oscillation for a siml . 79 s] 14. Energy, E joules, is given by the formula E = 12 L I 2 . 96 J] 15. c. circuit is V given by I = √ . 77 A] 16. Distance s metres is given by the formula s = ut + 12 at 2 . 25 m] 17. The area, √A, of any triangle is given by A = s(s − a)(s − b)(s − c) where a+b+c s= . 184 cm2 ] 18. 327] c e 37 Section 1 Calculations and evaluation of formulae Section 1 Revision Test 1 This Revision test covers the material contained in Chapters 1 to 4.
5 cm. 1 cm2 , correct to 1 decimal place. The volume V cm3 of a right 1 circular cone is given by V = πr 2 h. 35 cm, find the volume, correct to 4 significant figures. Problem 20. 8 cm3 , correct to 4 significant figures. Problem 21. Force F newtons is given by the Gm 1 m 2 formula F = , where m 1 and m 2 are d2 masses, d their distance apart and G is a constant. 6. Express the answer in standard form, correct to 3 significant figures. 6)2 Problem 18. Velocity v is given by v = u + at . 84 s, find v, correct to 3 significant figures.