A police car moving at a constant velocity with its siren on, passes a stationary listener. The graph below shows the changes in the frequency of the sound of the siren detected by the listener. 6.1 State the Doppler Effect in words. (2) 6.2 Write down the frequency of the sound detected by the listener … Read more
Carbonyl bromide, COBr2, decomposes into carbon monoxide and bromine according to the following balanced equation: COBr2(g) ⇌ CO(g) + Br2(g) ∆H > 0 Initially COBr2(g) is sealed in a 2 dm3 container and heated to 73 °C. The reaction isallowed to reach equilibrium at this temperature. The equilibrium constant for thereaction at this temperature is … Read more
6.1 The data below was obtained during an investigation into the relationship between the different velocities of a moving sound source and the frequencies detected by a stationary listener for each velocity. The effect of wind was ignored in this investigation. 6.1.1 Write down the dependent variable for this investigation. (1) 6.1.2 State the Doppler … Read more
SECTION C: SHORT STORIES In this section there are questions set on the following short stories: • ‘THE LUNCHEON’ by W Somerset Maugham• ‘RELATIVES’ by Chris van Wyk QUESTION 6 Read the extracts from the TWO short stories below and answer the questions set on each. The number of marks allocated to each question serves … Read more