The diagram shows a cross-section of a pool. The density of water in the pool is 1000 kg m^-3.

What is the pressure exerted by the water at X?

• 2.5 x 10² Pa

• 2.5 x 10^-3 Pa

• 4.0 x 10³ Pa

• 4.0 x 10⁴ Pa

Diagram 6 shows a container filled with water.

Which is the correct comparison of the pressure at P and Q?

• Pressure at P > pressure at Q

• Pressure at P = pressure at Q

• Pressure at P < pressure at Q

Diagram 8 shows two divers in a lake and a diver in a sea. The pressure of water at T, S and U is P_T, P_S and P_U respectively.

• P_U > P_T > P_S

• P_U < P_T < P_S

• P_U = P_T > P_S

• P_U = P_T < P_S

Diagram 7 shows two identical containers containing liquid P and Q.

When the height of liquid P is 15 cm and the height of liquid Q is 20 cm, water spurts is the same.

The density of liquid P is 2.0 g cm^-3.

What is the density of liquid Q?

• 0.67 g cm^-3

• 1.30 g cm^-3

• 1.50 g cm^-3

• 2.70 g cm^-3

Diagram 11 shows the process of supplying water from a water tank on a hill to a water tank X on a tall building.

Calculate the pressure of the water at X?

[Density of water: 1000 kg m^-3]

• 1.0 x 10⁵ Nm^‑2

• 1.4 x 10⁵ Nm^‑2

• 1.6 x 10⁵ Nm^‑2

• 2.6 x 10⁵ Nm^‑2

Diagram 9 shows water spurting out from a container at different depths. Which graph shows the correct relationship between the pressure exerted by the water, p and the depth of the water, h?

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Kumar and Abu are fishing in a lake. The bait used sinks 7.0 m into the lake. What is the water pressure exerted on the bait?

[Density of water = 1000 kgm^-3]

• 7.0 x 10⁴ Pa

• 7.0 x 10³ Pa

• 1.4 x 10³ Pa

• 1.4 x 10¹ Pa

Diagram 11 shows a submarine in a sea.

What is the depth, h, of the submarine when the total pressure is 2.06 x 10⁷ Pa?

[Density of water = 1.03 x 10³ kgm^-3]

• 2.00 x 10³ m

• 2.00 x 10⁴ m

• 2.12 x 10⁹ m

• 2.12 x 10¹¹ m

Diagram 10 shows a water container being tilted to increase the outflow of the speed of water.

Which factor increases the speed of water?

• Gravity

• Depth of water

• Volume of water

• Density of water

Diagram 11.1 shows a tank placed on a hill. The reading of a pressure meter at X is 5.0 x 10⁵ Pa and the density of water is 1000 kgm^-3.

• 5.0 x 10¹ m

• 5.0 x 10² m

• 5.0 x 10³ m

• 5.0 x 10⁴ m