If a small can filled with water is rapidly swung in a vertical circle, water do not fall down from its open mouth, why ?

If a small can filled with water is rapidly swung in a vertical circle, the water does not fall, why ?

If a bottle of soda water is grasped by the neck and swung briskly in a vertical circle, near which portion of the bottle do the bubbles collect ?

A bucket full of a water is whirled in a vertical circle with a velocity_____so that water does not fall.

A water fall discharges 60 litres of water per sec from a vertical height of 200 m . Assuming that all the energy due to fall is converted to heat and is retained by the falling water , find (i) the quantity of heat produced per sec and (ii) rise in temperature of water .

A sperical balloon of 21 cm diameter is to be filled up with hydrogen at NTP from a cylinder containing the gas at 20 atm and 27^@C . If the cylinder can hold 2.82 liters of water, calculate the no. of balloons that can be filled up ?