Question

A small hole is made at the bottom of the
tank filled with water. If the total pressure
at the bottom of tank is 2 x 105 N/m2,
then the velocity of efflux is (1 atm = 105
N/m2)​

Answer 1

Answer:

Hey mate here is your answer.//

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Explanation:

1 atm=10 to the power 5 N/m², not 105 N/m²,

So,2×10 to the power 5 = 2 atm,

Net pressure at the bottom of the tank = 2 atm,

=> ρgh + 1 atm = 2 atm,

=> ρgh = 1 atm,

1 atm = 10⁵ N/m²,

density of water = 1000 kg/m³,

g = 10 m/s².

Putting these values in the eqn we get:

=> 1000 x 10 x h =   10⁵,

=> h = 10 m,

we know that the velocity of efflux is given by:

v =

=> v = √( 2 x 10 x 10),

=> v = 14.14 m/s.

Hence the velocity of efflux at the bottom will be 14.14 m/s.

Hope it helps you.//✔✔✔

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