Question

dav school class8 science chapter 4 solution
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Answer 1

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Answer 2

Answer:

E4. We know that pressure varies directly with thrust and inversely with area on which force is applied. For equal amount of force, a smaller area would result in greater pressure. Hence, rod A will sink more while rod B will sink less.

E5. water will start to gush out of three holes. water from hole A will go to maximum distance because pressure is highest at bottom. water from hole c will go to the least distance because of the least pressure.

E6 water will start gushing out of two holes. as the holes are at the same height so water will reach same distance. this happens because of same pressure.

E7 atmospheric pressure decrease with increase in altitude. for constant volume, pressure increases with increase in temperature. in other words, at constant volume, pressure is is directly proportional to temperature.

Explanation:

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