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The dielectric constant is the ratio of the permittivity of a substance to the permittivity of free space. It is an EXPRESSION of the EXTENT to which a material concentrates electric FLUX, and is the electrical EQUIVALENT of relative magnetic permeability.

Answer:

Explanation:

Good:Helps US to WALK on road.Helps MOVING vehicles to stop.

Bad:INCREASES wear and tear of vehicle.Maintenance COSTS are increased.

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a HOLLOW place in a solid body or surface.

"the DOG had dug a HOLE in the ground"

synonyms:pit, DITCH, TRENCH, cavity, crater,depression, hollow; 

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What is the RADIUS of RING?

Acceleration=change in velocity/time.
=40/(10/3600)
=14400km/h^2.

=40000/10=4000m/s^2

ACCERALATION in day to day LIFE; A train ARRIVES at STATION.

Wind currents occur due to (a) uneven heating between the regions near the equator and the poles and the rotation of the earth and (b) uneven heating of land and water in coastal areas. The equatorial and TROPICAL regions get hotter than the polar regions as they get maximum heat from the sun. The warm air at the equator rises, and the cold air MOVES in from the polar regions. The air moves due to uneven heating of the earth?s surface between the equator and poles, which RESULTS in the circulation of wind across the globe. But the wind FLOW is not in the exact north-south direction because a change in direction is caused by the rotation of the earth

Limitations to Increase in Sensitivity of moving coil galvanometer are If the turns of the coil are INCREASED the length of wire and HENCE the resistance of the coil increases. ... Hence spring higher value of K should be used which DECREASES the sensitivity of the galvanometer THANKS for asking this question

20800 VIBRATION of SOUND

The spectrum is the range of different COLORS which is PRODUCED when LIGHT PASSES

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The gravity of FRESHWATER is more than marine that's why it happened

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The SHAPE of the EARTH is SPHERICAL .

A ship sinks until it has displaced its own WEIGHT of WATER. That is why we REFER to the 'displacement' of the vessel.

The denser the water. the higher the ship will RIDE

We all know that pressure is INDIRECTLY PROPORTIONAL to area so if area is LARGE pressure is very less.....so therefore the wall of DAM are broad at is base to reduce the pressure

D are CORRECT ANSWER

When you PLACE object between POLE and FOCUS you will get an virtual image

Because the KNIFE is SHARP!!!!

Hi.


here is your answer. ..


1. If thin rod of diamagnetism material is freely suspended in external uniform MAGNETIC field, it comes to rest with its length PERPENDICULAR to the direction of the field.


2. In these absence of external magnetic field the net magnetic moments of diamagnetism substance is 0.


3. Diamagnetic substance LOSE their magnetism on REMOVAL of external magnetic field .


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v=u+at.This SHOWS VELOCITY is DIRECTLY PROPORTIONAL to TIME

v=gt

h=1/2gt

this is in CASE of FREELY FALLING OBJECT

A = S = displacement
LET F = u = initial velocity
d = t = time
acceleration = a = g

S = -UT - 1/2gt²

here -u because it GOING down i.e negative 'y' axis and 'g(acceleration due to
gravity) is always acting on negative'y'axis i.e DOWNWARD.

V=u+at for FREE FALL BODY V=u-gt

ANSWER is here. :) CHECK this out

Hey mate here's the answer
The first ever train was MADE by Richard Trevithick.
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150 gwt=1.5kgwt in s.I SYSTEM

You can prevent damage from using a fuse.fuse in a CIRCUIT PREVENTS DAMAGES to the appliances and the circuit due to overloading . Do not connect too MANY applications in a single socket

Light year :- The DISTANCE TRAVELED by the light in one year is CALLED a one light year.

1 ly = 3×10^8 × 60 × 60 × 24 × 365.25 m

1 ly = 946728 × 10^10 m

1 ly = 9.46728 × 10^15 m.

here , ly ----> light year

Hope this helps :)
DONE it USING the lens FORMULA, and the formula for MAGNIFICATION.

First,

The concave mirrors are commonly used as shaving mirrors because when we see our face in the concave mirror then an enlarged and erect image is FORMED which helps in smooth shaving.

Second,

A concave mirror is also used as head mirror by doctors to EXAMINE the retina of the eye, ear and throat.

Third,

A convex mirror is used in automobiles such as scooters, trucks and buses as REAR VIEW mirror to see the traffic behind the vehicle

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here law of INERTIA is works as a key point. the bowler runs from a long distance before he is throwing a ball towards the batsman. such that he is in high MOTION. since the ball is in the hands of him, it is also get the same motion and force as much as the bowler. the bowler STOPS his running at a point suddenly with a GREAT speed. by the newtons first law, here law of inertia will applicable. although the bowler stops, the ball travels by continuing its motion upto some distance high with the inertia. this is because of the ball is still have its momentum and inertia. so the ball is able to go to the BATSMEN because of these inertia although the bowler stops running.

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So what is your QUESTION?

V SQUARE by RAND v=omega into R

Since friction is a resistance force that slows down or prevents motion, it is necessary in many applications where you might want to hold items or do things and prevent slipping or sliding.

Basically friction is important, so that, friction between our shoes and the floor STOP us from slipping. friction between tyres and the road stop cars from skidding. friction between the brakes and WHEEL HELP bikes and cars SLOW down.

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28830 seconds are there in 8 HOURS and 30 seconds..mark it as brainliest PLZ

Radius=42250km
circumference=2×3.14× r
c=265330km
time=24 hours
speed=Distance ÷ time
v=s÷t
v=265330÷24
v=11055.41km/h
3.07km/s

science is the BETTER for FUTURE ,we should represent a NEW moderise SCINCE to the COMING generation

So FIRST we have to KNOW that U E
e=mc×mc

So here is the ANSWER

Ratio of DISTANCE by time is called speed . speed is scalar QUANTITY because it does not change its direction.
whereas , VELOCITY is the ratio of displacement by time . it is VECTOR quantity because it can change its direction.

Static friction is the friction between TWO SURFACES that are not in relative motion with each other, while DYNAMIC also KNOWN as (Kinetic) friction is the friction between two surfaces that are in relative motion with RESPECT to each other

The refractive index is a PROPERTY of the MEDIUM through which light is passing. For a vacuum, the refractive index is 1 for all wavelengths.
Ordinary dielectric transparent media such as glass will have a higher index for blue than for red. (I don’t like to use the term “violet” because it is so easily confused with purple or magenta, which are not pure colors. Violet can be difficult to see and difficult to capture on a video camera or on certain kinds of film.)
The reason for the index change has to do with absorption bands in the glass. There are always some absorption bands in the infrared and in the ultra-violet. In between two absorption bands, the index always increases toward shorter wavelengths. In the absorption band itself, the index will decrease toward shorter wavelengths. This latter phenomenon is called “anomalous dispersion.” (or sometimes “resonant dispersion.”)
Newton noticed that every glass known in his time exhibited an increase in index as the color shifted from red to blue. He incorrectly concluded that dispersion could not be compensated by using multiple glasses and decided to build his telescopes using only mirrors.
All materials other than vacuum exhibit dispersion with wavelength because all materials absorb in some band or other. Absorption is a resonant phenomenon. Another resonant phenomenon is gain, such as in a laser, where a population inversion is present. In such a medium, the index may be higher for red than for blue. Other materials such as ionized gases, nanostructures, and specially made multi-layer dielectric coatings may exhibit anomalous refractive index properties under limited conditions. At longer wavelengths, such as radio waves, a number of materials have been built with special properties. In these TYPES of media, the phase velocity can EVEN exceed c, the velocity of light. In these cases, the refractive index may appear less than one. This does not violate relativity. Nothing real is actually traveling faster than c. No photons are actually traveling faster than c. This may be confusing but is a bit off TOPIC so we won’t go into that.
When there is appreciable absorption present, the refractive index is actually complex. The real part is the ordinary refractive index, and the imaginary part is the absorption strength. There is a close relationship between the absorption versus wavelength and the index versus wavelength. Mathematically, it is known as the Kramers-Kronig relationship, which means any two media with identical absorption bands will have identical dispersions.
Crystalline materials are even more complicated because they can have different refractive indices in different directions. Such materials are called birefringent.
In summary, all ordinary clear transparent media such as plastics or glasses or salts exhibit dispersion so that the refractive index increases from red toward blue wavelengths. Only specially constructed “materials” will exhibit a reversal in the dispersion direction.

HI FRIEND....

The two magnetic field lines do not intersect each other because if they do it means at the point of intersect the COMPASS needle is showing two different DIRECTIONS which is not possible.

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