Understanding Hydrostatic Pressure, Hydraulics, and Buoyancy
Hydrostatic Pressure
Hydrostatic pressure is the pressure within a liquid caused by the weight of the liquid itself.
Features of Hydrostatic Pressure:
- The pressure inside a liquid acts in all directions.
- The pressure is higher at greater depths.
- The pressure increases with the density of the liquid.
- The pressure is not dependent on the shape or width of the container.
The pressure at any point inside a liquid of density d is due to the weight of the liquid above it.
Fundamental Principle of Hydrostatics
The
Read MoreQuantum Mechanics: Concepts and Applications
Quantum Mechanics
Quantum mechanics is a fundamental theory in physics that provides a description of the physical properties of nature at the scale of atoms and subatomic particles.[1] It is the foundation of all quantum physics, including quantum chemistry, quantum field theory, quantum technology, and quantum information science.
Classical physics, the collection of theories that existed before the advent of quantum mechanics, describes many aspects of nature at an ordinary (macroscopic) scale,
Read MoreUniverse: From Big Bang to Planets and Life
The Universe
- It’s a huge vacuum in which billions of galaxies float. For each galaxy, there are thousands of stars, planets, and nebulae.
- Some of them can be seen with the naked eye, and others can be seen with telescopes.
- Formation of the observable cosmos: 75% hydrogen, 20% helium, and 5% the rest of the elements.
Dark Matter
- 90% of the total matter in the universe is dark matter, whose composition and position are unknown because it cannot be seen or emit radiation.
- Proof of existence: A few galaxies
Understanding Vibrations and Waves: Solved Physics Examples
Vibrations and Waves
1) A wiggle in time is a:
A) vibration.
B) wave.
C) both
D) neither
Answer: A
2) A common source of wave motion is a:
A) wave pattern.
B) harmonic object.
C) vibrating object.
D) region of variable high and low pressure.
E) none of these
Answer: C
3) Like a transverse wave, a longitudinal wave has:
A) amplitude, frequency, wavelength, and speed.
B) amplitude, frequency, and wavelength.
C) amplitude, wavelength, and speed.
D) wavelength, speed, and frequency.
E) amplitude, frequency, and speed.
Read MoreUniverse Origins: Glossary of Space and Physics Terms
Universe Origins: Glossary of Terms
Understanding the technical jargon behind the science of the universe’s origins is simplified with this glossary.
- Anisotropy: The variation of a physical property depending on the direction in which it’s measured. For example, the temperature of the cosmic microwave background radiation.
- Antimatter: Material composed entirely of antiparticles.
- Antiparticle: A counterpart to every particle having the same mass but opposite properties at a quantum level (electrical
Windshield Replacement & Repair
Windshield Replacement
First, dismount the vehicle moldings, trims, etc.
Remove windshield wipers and rearview mirror.
Before cutting the adhesive, protect the area around the windshield with masking tape to avoid scratching the paint. Also, protect the interior to avoid damaging the dashboard.
Tools for Cutting Adhesive
- Piano wire or rope
- Oscillating blades
- Heat cutter
- Utility knife for manual cutting
Once cut, remove the windshield using suction cups.
Surface Preparation
Start by removing the remains of
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