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When a soap bubble expands, work is done against surface tension to increase the surface area. A soap bubble has two surfaces (inner and outer), so total surface area is twice that of a single sphere. Let:
There are 8 inlet and (x-4) outlet pipes attached to a tank. Each inlet pipe takes 24 hours to fill the tank, and each outlet pipe empties the fully fil...
Two inlet pipes 'A' and 'B' can fill an empty tank in 36 minutes and 54 minutes, respectively. Another outlet pipe 'C' can empty the tank in 108 minutes...
Two inlet pipes M and N alone can fill a tank in 12 hours and 15 hours respectively and an outlet pipe P alone can empty the whole tank in 10 hours. Fir...
Pipe ‘A’ can fill a 240-litre tank in 15 hours. If pipe ‘A’ is 25% more efficient than pipe ‘C’ whereas pipe ‘B’ is 50% more efficient t...
Tap ‘A’ and tap ‘B’ can fill a tank in 48 hours and 30 hours, respectively. If both taps are opened together, then find the time after which tap...
Pipe A alone fill the tank in x hours and Pipe B alone fill the tank in (x – 5) hours. If the efficiency of pipe B is double of pipe A and pipe A fill...
There are three taps with diameters of 3cm, 4cm, and 5cm respectively. The ratio of the water flowing through them is equal to the ratio of the square o...
A single tap takes 8 hours to fill the entire tank. Initially, only one tap is open, and it fills one-fourth of the tank. At that point, three additiona...
Pipe A can fill the empty tank in 25 minutes while pipe B can empty the half-filled same tank in 15 minutes. What is the time require to fill (80/3) % o...
Pipe ‘A’ can fill a tank in 16 hours. Pipe ‘B’ is ____% as efficient as pipe ‘A’. If both pipes are opened simultaneously, the tank will be ...
