Electrostatic
What is Electrostatic?
What is magnetism?
a physical phenomenon produced by the motion of electric charge, resulting in attractive and repulsive forces between objects.
What are the Waves?
a disturbance or variation that transfers energy progressively from point to point in a medium and that may take the form of an elastic deformation or of a variation of pressure, electric or magnetic intensity, electric potential, or temperature.
Sound Waves are meant to?
send sound information to the brain for processing.
What is electromagnetism?
What is meant by quantisation of charges?
The charge q on any object is equal to an integral multiple of the fundamental unit of charge e.
How do magnets heal?
Magnets have no healing properties. Magnetic Resonance Imaging MRI employs very strong magnetic fields, far stronger than a household magnet can produce, and yet MRI's have no direct effect on the health of the patient an MRI may have an indirect effect as a diagnostic tool.
A single disturbance that moves from point to point through a medium is called a?
pulse
Define the frequency of a sound wave?
The frequency of a sound wave is the number of compressions and rarefactions that happen per unit time.
Do atoms ever actually touch each other?
two atoms never touch at room temperature because of the Pauli exclusion principle.
Write down Coulomb’s law in vector form?
Coulomb's law states that the electrostatic force is directly proportional to the product of the magnitude of the point charges and is inversely proportional to the square of the distance between the two point charges.
Why are all metals magnetic?
If the crystalline structure of the atoms within a piece of metal is aligned so that all of the atoms are facing the same direction.
If the particles of the medium are vibrating to and fro in the same direction of energy transport, then the wave is a ____ wave?
longitudinal
Which is the medium through which sound waves move the fastest?
The sound waves move the quickest through solids.
How can it be so hard to drag rubber across smooth glass if friction is caused by surface roughness?
In oresence of these weak bonds, if these objects are brought together they get attracted and making it hard to drag rubber across smooth glass.
What are the differences between Coulomb force and gravitational force?
Depends on the magnitude of charges.
Depends on the mass of the object.
How is a magnetic field just an electric field with relativity applied?
A magnetic field is not just an electric field with relativity applied, is an electric field viewed from the wrong reference frame.
When the particles of a medium are vibrating at right angles to the direction of energy transport, then the wave is a ____ wave?
transverse
Which is the medium through which sound waves move the slowest?
The sound waves move the slowest through gases.
How can you tell a black hole made out of antimatter from a black hole made out of matter?
there is no difference between an antimatter black hole and a regular matter black hole if they have the same mass, charge, and angular-momentum.
What is mean by ‘Electric field lines’?
Electric field lines are an imaginary straight or curved path along which a unit positive charges tends to move in an electric field.
What is the strongest magnetic field possible?
When a magnetic field gets stronger than about 500,000 Gauss, objects get ripped to pieces by the intense forces.
A transverse wave is traveling through a medium. See diagram below. The particles of the medium are vibrating _____?
parallel to the line joining AD.
The low-pressure regions and high-pressure regions are called _____ and _____, respectively?
rarefactions and compressions
How is a magnetic field just an electric field with relativity applied?
This is a misconception an electric field viewed from the wrong reference frame.