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Solid State Physics
Solid State Physics is the branch of physics that deals with the physical properties of solid materials, especially the electromagnetic, thermodynamic, and structural properties of crystalline solids.
813 Questions
Diode in simple terms is a "One Way" Device, i,e it allows current to flow thru in one direction only.
Diodes are the most indispensable part in the electronic/electric World.
Cogging torque is the phenomenon where a permanent magnet motor experiences non-uniform force during rotation due to magnetic attraction between the rotor and stator teeth. This can cause vibrations, noise, and affect the smoothness of the motor operation. Design techniques such as skewing the rotor slots or using sinusoidal winding can help reduce cogging torque.
What is difference between carat and milligram?
Carat is a unit of measurement used for gemstones, with one carat equal to 200 milligrams. Milligram is a unit of measurement used for weight, equal to one thousandth of a gram. Carat is specific to gemstones, while milligram is a general unit used for various substances.
What are the fundamental quantities?
The fundamental quantities are physical quantities that are independent and cannot be derived from any other physical quantities. There are seven fundamental quantities in the International System of Units (SI): length, mass, time, electric current, temperature, amount of substance, and luminous intensity.
What are the two types of system measurement?
The MKS-ISO metric system and the CGS-ISO metric system. The American, Imperial, or customary units of measurement are not a system at all, they are an accumulation of antique units.
The formula for work is given by: Work = Force x Distance x Cos(theta), where Force is the amount of force applied to an object, Distance is the distance over which the force is applied, and theta is the angle between the direction of the force and the direction of motion.
When objects are on fire do they expand?
It is a matter of timing. The correct answer is most likely yes. At some scale all objects would expand before exploding. If you were to watch a bomb go off on a video and watched on a film that captued 20 frames a second you would not see it expand. If it captured 500 frames per second, again you may not see it. At 10,000 frames per second (not possable that I am aware of) you would watch the bomb expand prior to the skin of it rupturing. If a bomb exploded but did not have enough explosives in it, it would most certainly just expand and not rupture (explode)
What is the SI unit for Friction?
[Simple Explanation]
As friction is a force and the S.I. unit of force is Newton,
the S.I. unit of friction is Newton.
[Derivative Explanation]
F=µN,
where F is Frictional force,
µ is coefficient of friction,
and N is net normal reaction.
N = -mg
where mg is gravitational force whose SI unit is Newton.-(1)
Coefficient of friction is dimensionless. -(2)
From (1) and (2), SI unit of F = SI unit of N x SI unit of µ = Newton
Hence SI of Friction is Newton.
What happens to speed of light when light goes into air?
That depends what it comes out of. If it passes into air from vacuum, then
its speed decreases. If it passes into air from water or jello, then its speed
increases.
Why does light of shorter wavelength produce a clearer image than light of longer wavelengths?
One of the basic consequences of the wave theory of light is:
a wave can react only with an object that has a dimension that is equal to or greater than the wavelength of the wave.
This was one of the most impressive demonstrations that I can remember from my education and it was done in grade eight with nothing more complex than a ripple tank.
Therefore in order to see molecules you have to use light (or electron waves) at or above the frequency of x-rays or gamma rays. Radar can do no better than displaying a blimp of quite massive objects.
What is the main use of nuclear energy?
The main use of nuclear energy is to produce electricity. Nuclear energy is also used in the field of medicine and military purposes.
Characteristics of Bose-einstein condensate?
its compose of two (2) significant propertie: Surface tension and Viscosity (just like the liquid matter)
What are super-cooled liquids?
I know it sounds a little stupid, but supercooling is when water remains a liquid while it is below freezing point. Note, only some waters can do this.
Nanoparticles are tiny particles that are between 1 and 100 nanometers in size. They are often used in fields such as medicine, electronics, and materials science due to their unique properties at the nanoscale. These properties can differ significantly from their bulk material counterparts.
Can a human walk through a solid wall?
Perhaps.
When looking at the structure of the atom, we know that it is about 99.99(some number of 9's)999% empty space (meaning not filled by subatomic particles). This means that everything and all matter is mostly empty space. If you took all the empty space out of all the atoms in the earth, the earth would fit in your hand, but still weigh around 5.9 * 1024 kg.
Without taking quantum physics into account, some people will make the assumption that all of this empty space in atoms can make it possible for objects to pass through other objects. Although this is not taking electrons into account. Electrons are tiny even when comparing it to a proton, but it packs a strong negative charge. In addition, these electrons are moving around the circumference of the atom around the speed of light. So when an atom comes into contact with another atom, the electrons that are constantly circling the atoms will repel each other. In fact, this repelling charge is enough that you haven't actually touched anything in your life! If you stand up, the electrons in your shoes repel the electrons in the floor and you're levitating about a millionth of a centimeter above the floor. Getting back to the walking through walls question, the electrons in the atoms in your body will always repel the electrons in the atoms of the wall. No phasing though a barrier there.
But we have another option we can look to. In the beginning I said that you needn't take quantum physics into account. For this solution, we will have to bring it back.
One of the most central ideas of quantum physics is the theme of uncertainty. Quantum mechanics says that the location of anything is always uncertain. If you are looking at a book on a bookshelf, you can't say with 100% certainty that the book is on the bookshelf. Nor can you say that the book is still on the bookshelf when you leave the room. In general, we can say that the electrons in an atom have a lot more uncertainty when talking about it's position. The position of an electron on an atom is called an orbital, although an orbital really means the most likely position an electron will be.
Taking all of that uncertainty into account, the effect of "quantum tunneling" comes into play. Quantum tunneling is when particles will jump from point A to point B without passing though the space inbetween. This is an actual observed effect that has some applications in technology today. It is believed that atoms will sometimes do this to combine and form heavier elements. Back to the main point, singular atoms may do this, but humans are made up of a lot more atoms. This means if quantum tunneling were to take effect, all the atoms in your body would move from one side of the wall to the other without passing through the wall itself.
If you would like to try this, go ahead, just walk into any wall....... about a couple of trillion times. One of those trillion times, your atoms are likely to tunnel right through the wall. Unfortunately, the time it would take you to run into a wall that many times would take you billions of years. Anyway, you would be dead after a certain number of intentful hits to the head.
Or you could save yourself the time and just use the door!
When you sit in a chair what exerts against you?
Assuming that the seat of the chair is horizontal, and you an penis d the chair are stationary, the key forces here are your weight, which is acting vertically downwards on to the chair, and an equal reaction force, or normal contact force, of the chair acting on you. This force acts vertically upwards. You could also include the forces of the air acting on you and vice versa, but this is probably not what you're after.
Can i find information on supercooling?
Supercooling is the process of cooling a liquid below its freezing point without it solidifying. It is often observed in pure liquids or liquids with impurities. This phenomenon is used in various industries, such as in the production of supercooled water for cloud seeding or in the preservation of biological samples at ultra-low temperatures.
How do you figure out density?
Density is calculated by dividing the mass of an object by its volume. The formula for density is D = m/V, where D is density, m is mass, and V is volume. The unit of density is typically grams per cubic centimeter (g/cm^3).
What are the parts of the wave?
The trough or the valley between two waves is the lowest part of a wave. Its highest point is called the crest.
What is the best example of transfer of momentum?
In an isolated system the total momentum of a system remains conserved. For example If you fire a bullet from Gun , bullet go forward with some linear momentum and in order to conserve the linear momentum the gun recoils
What happens to heated particles inside of a solid?
Like in a gas when a solid gets hot the particles vibrate faster and harder. In a gas when the do this they need more room so the gas expands or the pressure goes up.
In a solid the particles are constrained in their movement by the bonds making the solid. Never the less the particles vibrate harder within these constraints and need more room. The solid will therefore expand slightly to accommodate. As the temp goes up further the atoms of the solid will begin to hit one another causing their electrons to jump to higher shells. When these fall back to their proper place they emit a photon. Thus solid will begin to radiate energy.
Elasticity refers to the ability of a material to regain its original shape after being stretched or deformed. It is a measure of how much a material can stretch or deform under stress and then return to its original form once the stress is removed. Materials with high elasticity are often referred to as "elastic."
What is one of the main characteristics of a solid?
Finite volume, and a finite shape are the main characteristics.
What are some of the general properties of gases that distinguish them from liquids and solids?
Some properties or characteristics that distinguish gases from solids and liquids are that they are compressible and also can expand to fill the volume in a container. Likewise, gas molecules are far apart and can occupy more space when compared to those of solids or liquids.
Does the surface of a hill effect how fast a ball will roll down it?
Yes, the surface of a hill can affect how fast a ball will roll down it. A smoother surface will have less friction, allowing the ball to roll faster, while a rougher surface will create more friction and slow the ball down. Additionally, the incline of the hill will also impact the speed of the ball as steeper hills will cause the ball to accelerate more quickly.
