5054 Pressure and Liquid Pressure Calculations

Naruto and Sasuke are fighting on a calm still body of water.

Naruto exerts a pressure of 34 300 Pa on the water's surface. His feet area is 0.02 m².

How much force is exerted by Naruto? [g = 9.8 N/kg]

• 686 kg

• 1 715 000 N

• 686 N

• 1. 1 715 000 kg

Answer explanation

What is the pressure exerted by Wall Maria in 'Attack on Titan' on the ground, given that the ground-contact area of the wall is 24,000,000 m² and the estimated mass of the wall is 576 000 Gg.

[g = 9.8 N/kg]

• 235.2 kPa

• 23.52 kPa

• 0.2352 kPa

• 0.0002352 kPa

Deku is capable of shattering concrete with his quirk (skill) with a force of 50 kN.

How much pressure did he exert if his fist has an area of 0.0032 m²?

• 1.56 MPa

• 5.00 MPa

• 15.6 MPa

• 50.0 MPa

Rin loves to go camping at Fujizakura Hills. The atmospheric pressure at the camp base is 74.6 kPa.

Standard sea-level atmospheric pressure is 101.325 kPa.

What is the approximate difference in atmospheric pressure between Fujizakura Hills and sea level?

• 5 kPa

• 15 kPa

• 26.7 kPa

• 35 kPa

If Ultraman in his giant form stands on the ground and exerts a force of 2 000 kN, what is the pressure he exerts on the ground?

His total feet area is 100 m².

• 20 000 Pa

• 200 000 Pa

• 2 000 000 Pa

• 20 000 000 Pa

Ponyo lives in the ocean and loves to visit the land sometimes. The ocean water has a density of 1025 kg/m³ and gravitational field on Earth is 9.8 N/kg.

What is the pressure exerted by the seawater on Ponyo when she dives 100 m below sea level?

• 1 004 500 Pa

• 1 004 500 N/cm²

• 1 004 500 W

• 1 004 50.0 Pa

What is the maximum pressure experienced by Wailord at its maximum diving depth of 3,048 meters in the ocean, given the density of seawater is 1025 kg/m³ and the acceleration due to gravity is 9.8 m/s²?

• 3.05 × 10⁷ Pa

• 3.15 × 10⁷ Pa

• 3.25 × 10⁷ Pa

• 3.35 × 10⁷ Pa

A group of friends went diving.

How far did they dive if they feel a pressure of 3.04 × 10⁵ Pa? Assuming the density of seawater is 1025 kg/m³ and acceleration due to gravity is 9.8 m/s².

• 30 m

• 30 cm

• 30 J

• 30 Pa

Gon and Killua are swimming in a pool as part of their physical training.

The pool has a depth of 1.2 m on the shallow end and 3.7 m in the deep end.

How much pressure do they experience is they swim to the deeper end? Assuming density of pool water is 1010 kg/m³ and g = 9.8 N/kg.

• 36 623 Pa

• 11 878 Pa

• 3.6623 kPa

• 1.1878 kPa

Pikachu dives into a body of water 2 m below water level.

How much pressure did Pikachu experience if the density of water is 1025 kg/m³ and the acceleration due to gravity is 10 m/s²?

• 20.5 kPa

• 40.5 kPa

• 51.25 kPa

• 102.5 kPa