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The desired minimum total coliform count...

The desired minimum total coliform count level in the river Ganga are ...

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500 MPN/100 ml
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State the unit of coliform count levels in the water.

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Given in figure are examples of some potential energy functions in one dimension. The total energy of the aprticle is indicated by a cross on the ordinate axis . In each case , specify the regions ,if any , in which the particle cannot be found for the given energy .Also , indicate the minimum total energy the particle must have in each case . Think of simple physical contexts for which these potential energy shapes are relvant .

A man crosses a river in a boat. If he cross the river in minimum time he takes 10 min with a drift 120 m. If he crosses the river taking shortest path, he takes 12.5 min, find (a) width of the river (b) velocity of the boat with respect to water (c) speed of the current

A river 4.0 miles wide is following at the rate of 2 miles/hr. The minimum time taken by a boat to cross the river with a speed v=4 miles/hr (in still water) is approximately

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Assertion: To cross the river in minimum time swimmer should swimming in perpendicular direction to the water current. Reason: In this case river flow helps to cross this river.