Question

1. a soap bubble in vacuum has a radius of 3 cm and another has a radius of 4 cm. if the two bubbles coalesce under isothermal condition,then find the radius of the new bubble ?
2. there is a hole in the bottom of tank having water. if total pressure at bottom is 3 atm (1atm= 105 N/m2); then the velocity of water flowing from the hole is :
a. root(400)m/s b. root(600) m/s.

Answer 1

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