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Solve the given problem:
Problem: Two trains on separate tracks move toward each other. Train 1 has a speed of 135 km/h; train 2 a speed of 81.0 km/h. Train 2 blows its horn, emitting a frequency of 500 Hz.
A- What is the frequency heard by the engineer on train 1?
Hz
Show all work, use additional paper if necessary.
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A siphon, as shown in the figure (Figure 1) , is a convenient device for removing liquids from containers. To establish the flow, the tube must be initially filled with fluid.
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If a man is capable of lifting a 149 lb stone on land, how heavy a stone could he lift under water? The specific gravity of the stone is 2.45
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