8.1 The purchase price of a car five years ago was R200 000. The current book value of the car is R85 000. Using the reducing-balance method of deprecation, calculate the annual rate of deprecation. (3) 8.2 An amount of money was invested at a rate of 8,5% p.a., compounded quarterly. Calculate the effective interest … Read more
8.2 The Venn diagrams below represent different scenarios of events A and B. Write down the probability of the shaded region for EACH of the diagrams below 8.3 Which diagram(s) in QUESTIONS 8.2.1, 8.2.2 or 8.2.3 represent mutually exclusive events? (1) [11] TOTAL:100
QUESTION 8 (Start on a new page.) The simplified diagram below represents the water cycle. Condensation andevaporation are two of the processes in the water cycle. 8.1 Define the term: 8.1.1 Condensation (2) 8.1.2 Evaporation (2) 8.2 Write down the name of: 8.2.1 Process A (1) 8.2.2 Process B (1) 8.2.3 Process C (1) 8.2.4 … Read more
The frequency and corresponding energy of electromagnetic waves are given in the table below. 8.1 Describe how an electromagnetic wave propagates. (2) 8.2 What is the relationship between frequency and energy of an electromagnetic wave, as shown in the table above? (2) 8.3 Calculate the: 8.3.1 Frequency of wave E (3) 8.3.2 Wavelength of wave … Read more
8.1 Consider the balanced equations for the reaction of water with nitric acid and ammonia below 8.1.1 Define an acid in terms of the Lowry-Brønsted theory. (2) 8.1.2 Write down the FORMULA of ONE conjugate acid-base pair in Reaction 1. (2) 8.1.3 Is the solution formed in Reaction 1 ACIDIC or BASIC (ALKALINE)? Give a … Read more
Two small identical metal spheres on insulated stands carry charges of +4,2 × 10-9 C and -6,8 × 10-9 C respectively. They are placed at a distance of 0,3 m apart. 8.1 State Coulomb’s law in words. (2) 8.2 Calculate the magnitude of the electrostatic force that the one charge exerts on the other. (3) … Read more
8.1 Calculate the effective interest rate per annum if an investment earns 9,5% interest perannum, compounded monthly. (3) 8.2 The value of a house increased to R764 050,60 over a period of 5 years due to inflation.The price of the house increased at a rate of 5% p.a. compounded annually.Calculate the original price of the … Read more