There are two holes one each along the opposite sides of a wide rectangular tank. The cross section of each hole is 0.01 m²and the vertical distance between the holes is one meter. The tank is filled with water. The net force on the tank in newton when the water flows out of the holes is: ( Density of water = 1000 kg/m³ )

A plastic tube containing few stones is floating in a tank of water. If the stones are unloaded, the water level :<br>

A force is experienced by cathode rays when they pass through uniform electric field <br>

A liquid does not wet the solid surface if the angle of contact is

A horizontal pipe of non-uniform cross-section allows water to flow through it with a velocity 1 ms^-1 when pressure is 50 kPa at a point. If the velocity of flow has to be 2 ms^-1at some other point, the pressure at that point should be

A soap bubble of radius r is blown up to form a bubble of radius 2r under isothermal conditions. If T is the surface tension of soap solution, the energy spent in the blowing

Eight spherical rain drops of the same mass and radius are falling down with a terminal speed of 6 cm-s^-1. If they coalesce to form one big drop, what will be the terminal speed of bigger drop (Neglect the buoyancy of the air)

Two soap bubbles combine to form a single bubble. In this process, the change in volume and surface area are respectively V and A. If P is the atmospheric pressure, and T is the surface tension of the soap solution, the following relation is true .

An air bubble of radius 1 cm rises from the bottom portion through a liquid of density 1.5 g/cc at a constant speed of 0.25 cms^-1. If the density of air is neglected, the coefficient of viscosity of the liquid is approximately, (In Pas) :

A large tank filled with water to a height h is to be emptied through a small hole at the bottom The ratio of times taken for the level of water to fall from h to h/2 and h/2 to zero is