question7
Question 7
7.1 Selby decided today that he will save RI 5 000 per quarter over the next four years. He will make the first deposit into a savings account in three months’ time and he will make his last deposit at the end of four years from now. 7.1.1 How much will Selby have at the … Read more
Question 7
Two small charged spheres, A and B, are placed on insulated stands, 0,2 m apart, asshown in the diagram below. They carry charges of −4 x 10-6 C and +3 x 10-6 Crespectively. M is a point that is a distance of 0,1 m to the right of sphere B. 7.1 Calculate the number of … Read more
Question 7
7.1 Ethanoic acid (CH3COOH) is an ingredient of household vinegar 7.1.1 Is ethanoic acid a WEAK acid or a STRONG acid? Give a reason for the answer. (2) 7.1.2 An ethanoic acid solution has a pH of 3,85 at 25 °C. Calculate the concentration of the hydronium ions, H3O+(aq), in the solution. (3) Sodium ethanoate, … Read more
Question 7
A landscape artist plans to plant flowers within two concentric circles around a vertical light pole PQ. R is a point on the inner circle and S is a point on the outer circle. R, Q and S lie in the same horizontal plane. RS is a pipe used for the irrigation system in the … Read more
Question 7
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