Answers The half-life of a radio-active element is 9 days, what fraction of atoms has decayed… The half-life of a radio-active element is 9 days, what fraction of atoms has decayed in 36 days? A. ( frac{1}{16} ) B. ( frac{1}{4} ) C. ( frac{1}{2} ) D. ( frac{15}{16} ) Correct Answer: Option D Explanation
Answers Given that p varies directly as q while q varies inversely as r, which of… Given that p varies directly as q while q varies inversely as r, which of the following statements… Read More
Answers Integrate (frac{1}{x}) + cos x with respect to x Integrate (frac{1}{x}) + cos x with respect to x A. -(frac{1}{x^2}) + sin x + k B. x… Read More
Answers A body is whirled round a circular path at constant speed. Which of the following… A body is whirled round a circular path at constant speed. Which of the following diagrams correctly indicates… Read More
Answers Market gardening is predominantly practised around major urban areas (b) Lumbering is practised mainly… (a) Market gardening is predominantly practised around major urban areas (b) Lumbering is practised mainly in the high… Read More
Answers The median of a distribution can be estimated from The median of a distribution can be estimated from A. Barchart B. Cumulative frequency curve C. Frequency polygon… Read More