(a) Did can 2 move up or down relative to can 1? By what distance? (b) Where is

Question

(a) Did can 2 move up or down relative to can 1? By what distance?

(b) Where is the water level now in can 1?

9. Geologists place tiltmeters on the sides of volcanoes to measure the displacement of the surface as magma moves inside the volcano. Although most tiltmeters today are electronic, the traditional tilt- meter, used for decades, consisted of two or more water-filled metal cans placed some distance apart and connected by a hose. The figure shows two such cans, each having a window to measure the water height. Suppose the cans are placed so that the water level in both is initially at the 5.0 cm mark. A week later, the water level in can 2 is at the 6.5 cm mark. (a) Did can 2 move up or down relative to can 1? By what distance? (b) Where is the water level now in can 1? 100 m Figure 8

Explanation / Answer

Part A) Can 2 moved down relative to can 1 by (6.5-5) cm = 1.5cm

Part B) As they are connected by pipe the total volume must be equal.

So can 1 will move down by same distance. So, new water level will be 3.5cm.

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