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Harrizon [31]
3 years ago
12

Explain why When a small drop of detergent is placed on water, the needle moves rapidly away from it and sinks when more deterge

nt is added.(Assume that the detergent does not affect the density of water)
Physics
1 answer:
PIT_PIT [208]3 years ago
6 0

Answer:

When soap is added to the water, the needle will be driven to sink by the disruption of the water's surface tension.

Explanation:

When soap is added to the water, the needle will be driven to sink by the disruption of the water's surface tension.

you are welcome

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Answer:

horizontal component of normal force is equal to the centripetal force on the car

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This force is due to friction force when car is moving in circle with uniform speed

Now it is given that car is moving on the ice surface such that the friction force is zero now

so here we can say that centripetal force is due to component of the normal force which is due to banked road

Now we have

N sin\theta = \frac{mv^2}{R}

N cos\theta = mg

so we have

v = \sqrt{Rg tan\theta}

so this is horizontal component of normal force is equal to the centripetal force on the car

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