Force and Press...

The density of a mixture of 1.5 m³ of water and 0.50 m³ of alcohol of density 800 kg/m³ is

Two vessels A and B have the same base area and contain water up to the same height, but the mass of water in vessel A is four times that of water in vessel B. The ratio of pressure on the base of vessel A to that on the base of vessel B is

The upthrust on a body immersed in a fluid is equal to the

A force of 10 kg wt is applied on the head of a nail of area of cross-section (of the tip) 0.0001 cm². What is the pressure exerted?

Find the pressure exerted on a surface having area equal to 25 m² by a thrust of 200 N.

When you press a rubber sucker against a surface, most of the air between its cup and the surface escapes out. To pull the rubber sucker off the surface, the applied force should be

A body floats in a liquid contained in a beaker. The whole system, as shown in the figure, falls freely under gravity. The upthrust on the body due to the liquid is

Water is flowing through a pipe under constant pressure. At some place, the pipe becomes narrow. The pressure of water at this place

What happens when a stream of air is blown through a tube under one of the pans of a physical balance in equilibrium?

For a steel boat floating on a lake, the weight of the water displaced by the boat is

A deep sea diver may hurt his eardrum during diving because of

What happens to a solid object with density less than that of water when it is put in water?

If you have 5 mL of a liquid that has a mass of 20 g, then what is the density of the liquid?

A raft is 2.35 m wide, 1.25 m long, and 0.365 m deep. What is the buoyant force on the raft, if only 0.125 m of the raft remains above water? (Take g = 10 m/s²)

A cube of side 5 cm having density 1600 kg/m³ is submerged in the water with help of a rope. What is the weight of the liquid displaced? (Take g = 10 m/s² )