Thursday, September 27, 2018
The warning signal on an ambulance has a frequency of 600 Hz. The speed of sound is 330 m s-1. The ambulance is travelling with a constant velocity of 25 m s-1 towards an observer.
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Question 4 The warning signal on an ambulance has a frequency of 600 Hz. The speed of sound is 330 m s -1 . The ambulance is travell...
Wednesday, September 26, 2018
The diagram shows a pump called a hydraulic ram. In one such pump the long approach pipe holds 500 kg of water.
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Question 10 The diagram shows a pump called a hydraulic ram. In one such pump the long approach pipe holds 500 kg of water. A...
Tuesday, September 25, 2018
The diagram shows a d.c. circuit. What is the resistance between the points P and Q due to the resistance network?
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Question 10 The diagram shows a d.c. circuit. What is the resistance between the points P and Q due to the resistance network...
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