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Q. You want to take a bath with the water temperature at 35°C. The water temperature is 38°C from the hot water tap and 11°C from the cold water tap. You fill tub with a total of 191kg of water. How many kilograms of water from the hot water tap do you use?

Q. A wire 13 m long and having a mass of 130g is stretched under a tension of 285N. If two pulses, separated in time by 30ms, are generated, one at each end of the wire, where will the pulses first meet?

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