HelpContactFor teachers and institutes
>_StemPy Lab
Mock TestsClassesGroups

>_StemPy Lab

Learn. Solve. Code the solutions. Test yourself.

Live examsFree mock exams, timed and rankedEveryone starts together, and your score and rank come the moment it ends.See the exams →

Learn

  • Physics
  • Chemistry
  • Mathematics
  • Biology
  • Python Programming
  • Statistics & Data Science
  • Classes
  • Groups

Practice

  • Problems
  • Quizzes
  • Mock Tests
  • Question Sets
  • Exams
  • Certificates
  • Python Labs
  • AI Practice Generator
  • Student-Created Tests

Community

  • Discussions
  • Resources
  • Notes
  • Blog

Account

  • Dashboard
  • My Content
  • Profile
  • Log in
© 2026 senLearn. All rights reserved.HelpAboutContactPrivacy PolicyTerms of UseRefund Policy
  1. Problems
  2. /Mechanics
  3. /Pressure and Fluids

Pressure and Fluids

Physics
+ Upload a Problem
More in MechanicsUnits and MeasurementMotion in a Straight LineRelative MotionVectors and Motion in a PlaneNewton's Laws of MotionFrictionWork, Energy and PowerMomentum and CollisionsCircular MotionGravitationRotational MotionElasticity and Mechanical Properties of SolidsPressure and FluidsFluid Flow, Bernoulli's Principle and ViscositySurface Tension and Capillarity
27 problems
Type:
1.
Answer, and give a reason. A steel needle sinks, but a steel ship floats.
High School (11–12) · Pressure and FluidsStemPy LabStemPy Lab
Easy
2.
An old coin weighs 0.315 N in air and 0.285 N when it hangs fully in water.
High School (11–12) · Pressure and FluidsStemPy LabStemPy Lab
Medium
3.
A raft of wood is 2.5 m × 1.6 m and 0.25 m thick.
High School (11–12) · Pressure and FluidsStemPy LabStemPy Lab
Medium
4.
A 0.75 kg copper block (density 8900 kg/m³) hangs from a spring balance, fully under water.
High School (11–12) · Pressure and FluidsStemPy LabStemPy Lab
Easy
5.
Two metal hemispheres of radius 12 cm are put together, and the air inside is pumped out until…
High School (11–12) · Pressure and FluidsStemPy LabStemPy Lab
Medium
6.
In a person standing up, the gauge pressure of the blood at the heart is 110 mm of mercury.
High School (11–12) · Pressure and FluidsStemPy LabStemPy Lab
Medium
7.
An open-tube mercury manometer is joined to a gas line.
High School (11–12) · Pressure and FluidsStemPy LabStemPy Lab
Medium
8.
A mercury barometer in a mountain village reads 685 mm.
High School (11–12) · Pressure and FluidsStemPy LabStemPy Lab
Easy
9.
The driver's foot pushes the master piston of a car's brakes, of area 2.5 cm², with 180 N.
High School (11–12) · Pressure and FluidsStemPy LabStemPy Lab
Medium
10.
A hydraulic jack has pistons 2.0 cm and 25 cm across.
High School (11–12) · Pressure and FluidsStemPy LabStemPy Lab
Medium
11.
Three vessels have the same base area, 0.020 m², and hold water to the same depth, 0.30 m.
High School (11–12) · Pressure and FluidsStemPy LabStemPy Lab
Medium
12.
A diver is 18 m down in sea water of density 1030 kg/m³.
High School (11–12) · Pressure and FluidsStemPy LabStemPy Lab
Easy
13.
Answer, and give a reason. Why can a gas have a bulk modulus but no Young's modulus or shear…
High School (11–12) · Elasticity and Mechanical Properties of Solids, Pressure and FluidsStemPy LabStemPy Lab
Easy
14.
Find the compressibility of water (B = 2.2 × 10⁹ Pa), of glycerine (B = 4.5 × 10⁹ Pa), and of air…
High School (11–12) · Elasticity and Mechanical Properties of Solids, Pressure and FluidsStemPy LabStemPy Lab
Easy
15.
A copper cube with edges of 12 cm is put in a tank where the pressure is raised by 3.5 × 10⁷ Pa.
High School (11–12) · Elasticity and Mechanical Properties of Solids, Pressure and FluidsStemPy LabStemPy Lab
Medium
16.
Find the extra pressure 2.5 km down in the sea, taking the density of water as 1.0 × 10³ kg/m³.
High School (11–12) · Elasticity and Mechanical Properties of Solids, Pressure and FluidsStemPy LabStemPy Lab
Medium
17.
A stone hangs from a spring balance. In air the balance reads 24 N; fully under water it reads 18 N.
High School (9–10), General · Pressure and FluidsStemPy LabStemPy Lab
Hard
18.
Iron has a density of 7800 kg/m³ and sinks in water.
High School (9–10), General · Pressure and FluidsStemPy LabStemPy Lab
Medium
19.
Ice has a density of 920 kg/m³ and sea water 1025 kg/m³.
High School (9–10), General · Pressure and FluidsStemPy LabStemPy Lab
Easy
20.
A 3 kg block of volume 0.004 m³ is held fully under water.
High School (9–10), General · Pressure and FluidsStemPy LabStemPy Lab
Medium
21.
The air presses on us with about 1.0 × 10⁵ Pa.
High School (9–10), General · Pressure and FluidsStemPy LabStemPy Lab
Medium
22.
In a garage, a 1200 kg car stands on a large piston of area 0.6 m².
High School (9–10), General · Pressure and FluidsStemPy LabStemPy Lab
Medium
23.
A diver is 12 m below the surface of a lake.
High School (9–10), General · Pressure and FluidsStemPy LabStemPy Lab
Medium
24.
A swimming pool is 3.2 m deep. Find (a) the pressure due to the water at the bottom and (b) the…
High School (9–10), General · Pressure and FluidsStemPy LabStemPy Lab
Medium
25.
A 45 kg girl stands on one heel of area 1.5 cm².
High School (9–10), General · Pressure and FluidsStemPy LabStemPy Lab
Medium
Page 1 of 2

Showing 1–25 of 27