A boat strik an under water rock which rock which is `2.0 m` below the water line. How much water in litre will enter the boat in `1` minute? (use g `=10 ms^(-2)`)

A boat strik with under water rock which creates a hole 4cm in diameter in the hull which is 1.2 m below the water line. At what rate in litre per second dose water enter?

A boat strikes an under water rock which punctures a hole 5 cm in dimeter in its hull which is 1.5 m below the water line . At what rate in liter per second does water enter ?

A river 3 m deep and 40 m wide is flowing at the rate of 2 km per hour. How much water in litres ) will fall into the sea in a minute?

A river 3m deep and 40 m wide is flowing at the rate of 2 km per hour. How much water (in litres) will fall into the sea in a minute ?

The power of a water pump is 2 kW. How much amount of water can it raise in 1 minute to a height of 10 m? (Take g=10ms^(-2) ).