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Repulsion is the SUREST test to find the poles of magnet. So ,used another bar magnet and you will find out its poles. You can't used IRON for these PURPOSE as it ATTRACTS from from both the poles.

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CARBON steel is an alloy consisting of iron and carbon. Several other elements are allowed in carbon steel, with low maximum percentages. These elements are manganese, with a 1.65% maximum, SILICON, with a 0.60% maximum, and copper, with a 0.60% maximum. Other elements may be present in quantities too small to affect its properties.the hardness

of plain carbon steel INCREASES progressively with increase in carbon CONTENT, so that generally the low-and medium carbon steel are used for constructional work, WHILST the high carbon steels are used for the manufacture of tools and other components where hardness and wear-resistance are necessary.

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Transistors are a three terminal semiconductor device used to regulate current, or to amplify an input signal into a greater output signal. Transistors are also used to switch electronic signals. The circulation of electrical current through all types of transistors is adjusted by electron addition.
Types of Transistors

There are a varieties and different types of transistors available in today's market including Bipolar, Darlington, IGBT, and MOSFET Transistors.

Bipolar Transistor - A Bipolar Junction Transistor (BJT) is a three-terminal electronic device made of doped semiconductor material and may be used in amplifying or switching applications. Bipolar transistors are so named because their operation involves both electrons and holes. A bipolar transistor will have terminals that are labeled: emitter, collector, base. A small current at the base terminal (passing from the base to the emitter) can modify or switch a much larger current between the collector and emitter terminals.

Darlington Transistor - The Darlington Transistor is actually two bipolar transistors, connected in such a way that the current amplified by the first transistor is amplified even further by the second one. This model offers a higher common-emitter current gain than if both types of transistors are separated and can even take up less space because both transistors can share a collector.

IGBT Transistor - An Insulated Gate Bipolar Transistor (IGBT) is a three-terminal power semiconductor device typically used as an electronic switch. IGBT's are types of transistors that are CAPABLE of switching electric power in many modern appliances such as electric cars, trains, variable speed refrigerators, air-conditioners and even stereo systems with switching amplifiers.

MOSFET Transistor - A Metal-Oxide-Semiconductor Field-Effect Transistor (MOFET) is used in integrated CIRCUITS to control the conductivity of a CHANNEL. MOSFETs are highly dependent on negative and positive charges. They have many purposes, including LIMITING a device's power levels, storing data, and being used as a switch for a wide variety of electronic devices.
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The change in Gibbs free energy is equal to the change in enthalpy MINUS the mathematical product of thechange in entropy MULTIPLIED by the KELVIN temperature. Each thermodynamic QUANTITY in the equation is for substances in their standard states. The usual units for is kJ/mol, while is often reported in J/K. mol.

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Changes which repeat themselves at regular intervaks of time are called periodic changes.


e.g. day and night, REVOLUTION of EARTH. etc


changes whuch are not repeated at regular intervals of time are called NON periodic changes.they can happen suddenly.



e.g. eartgquakes, volcanic eruptions. etc.





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Displacement is the 100 m because due the 7th ROUND of the CYCLIST...

Modulus of ELASTICITY :

The RATIO of stress and strain, is called MODULUS OF ELASTICITY.

There are 3 TYPES of modulus of elasticity;

1 ). Young's modulus

2). SHEAR modulus

3 ). Bulk modulus

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First member of lyman series(2---1)

Also,

1/lembda = RZ^2(1/n1^2 -1/n2^2)

Where,

R =1/912A°

Lembda given =1216A°

So,

1/1216A° =1/912A°Z^2(1/1^2 -1/2^2)

3/4 =Z^2(3/4)

Z =1

Now,

Second member of BALMAR series(4---2)

Putting the value of

Z =1

In the above formula..

You will get..

Lembda =4864A°

Here..n1=2

And n2=4

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When a wire is loaded with a weight more than its elastic LIMIT, the strain on the wire increases very fast. When the stress reaches the peak value, it is CALLED BREAKING stress. The force that causes the wire to BREAK is called breaking force.

The breaking force is directly proportional to the cross-sectional area of the wire and not its length. SIMILARLY, breaking stress is dependent only on the material of the wire and not its size.

Thus, when an elastic wire is cut into half, there is no effect on the maximum load it can support.

pass band attenuation : A stopband is a band of frequencies, between specified limits, through which a CIRCUIT, such as a filter or telephone circuit, does not allow signals to pass, or the attenuation is above the required stopband attenuation level.

pass band gain : The frequency response of the circuit is the same as that of the passive filter, EXCEPT that the amplitude of the signal is increased by the gain of the AMPLIFIER and for a non-inverting amplifier the value of the pass band voltage gain is GIVEN as 1 + R2/R1, the same as for the low pass filter circuit

It was DISCOVERED by SHEPHERD

Thus, many people rely on the exploration and exploitation of groundwater. ... The electrical resistivity method can be used in a wide RANGE of GEOPHYSICAL investigations, such as exploration for minerals, ENGINEERING investigation, geothermal studies, ARCHAEOLOGICAL surveys and geological mapping

An electromagnet is a temporary magnet which is COILED with a WIRE around the core of soft IRON.

A rainbow is a meteorological phenomenon that is caused by reflection, refraction and dispersion of LIGHT in WATER droplets resulting in a spectrum of light APPEARING in the sky. It TAKES the form of a multicoloured circular arc. Rainbows caused by sunlight always appear in the section of sky directly OPPOSITE the sun.

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Because PRODUCT is FORMED by the reactants. product is DEPEND upon REACTANT.

When the SOURCE of LIGHT is linear the wavefront is CYLINDRICAL in shape .

it is because the locus of all such points which are equidistant from the linear source lie on the surface of CYLINDER.

A) 1212 kg

m1a1=m2a2
12×1515= 15×m2
M2 = 1212kg

same ENGINE is USED FORCE is EQUAL

The HEAT called heat of vaporisation that convert any substance from the fluid to the GAS WITHOUT any heat CHANGE

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Anhydrous copper sulfate (CuSO4) is white, which means that it does not absorb LIGHT in the VISIBLE region of the spectrum. The HYDRATED copper sulfate (CuSO4 - 5H2O) is blue. ... The oxygen of each water molecule SHARES one pair of electrons with the central copper ion.

Boiling ACTION and Decreasing Pressure. ... As AMBIENT air pressure decreases, molecules evaporating from a boiling liquid MEET less resistance from air molecules and enter the air more easily. Because the VAPOR pressure can be reduced, the temperature needed to boil the liquid is also reduced

LEONHARD EULER (1707–83) was FOUNDED

Only linear dependent sources FOLLOWS OHM's law. 
For the case of linear dependent sources, the proportionality constant between dependent and independent variables is DIMENSIONLESS if they are both currents (or both voltages). 
A voltage controlled by a CURRENT has a proportionality factor expressed in units of resistance (ohms), and this constant is sometimes called "transresistance". While a current controlled by a voltage has the units of CONDUCTANCE (siemens), and is called "transconductance".
As they are linearly dependent, their ratio follows Ohm's law.
Dependent sources may not always have a linear relationship.

Properties of Alpha Rays, Beta Rays and Gamma Rays. Unstable atoms on RADIOACTIVE DECAY emit particles such asalpha particles, beta particles and gamma rays. These are ENERGY particles, and by producing these energy-rich particles the unstable radioactive atom tries to attain ATOMIC stability.



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Gamma RAYS of the more ELECTROMAGNETIC SPECTRUM has the HIGHEST FREQUENCY.

Because it has high conductivity and it is CHEAPER COMPARED to silver which is AVAILABLE QUITE costly .

OVERLOADING-adrupt increase in wire over its limit




causes
1-when two or more appliance is connected in same socket
2-when many appliances of high POWER RATING work SIMULTANEOUSLY in a HOUSE

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✔Fluorescent lamps work by passing electricity through mercury VAPOR, which in turn emits ultraviolet light. The ultraviolet light is then absorbed by a phosphor coating inside the lamp, causing it to glow, or fluoresce. ... High-pressure SODIUM lamps givearound 100 lumens/watt which is very similar to LED lamps.

✔Light-emitting diodes (LED) are semiconductors. As electrons pass through this type of SEMICONDUCTOR, it turns into light. Compared to incandescent and CFL bulbs, LED lights are more efficient at turning energy into light. Therefore, less of the energy RADIATES from the bulb as heat.

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The STRENGTH of the ELECTROMAGNET WOULD INCREASE

Black holes are incredibly MASSIVE, but cover only a small region.
Because of the relationship between mass and GRAVITY, this means they have an EXTREMELY powerful gravitational force.
Virtually nothing can escape from them — under CLASSICAL physics, even light is trapped by a black hole.

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Here is your ANSWER mate HOPE it is helps you. ,............... I think I have an ERROR CONNECTION

The RESULTANT RESISTANT will be 1/25of ORIGINAL so

50/25=2 OHM

DUE to SURFACE TENSION

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Time is the DIMENSION on which the EVOLUTION of state of a system is allowed to occur.

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The following hazards are
Radioactive waste

High-level waste.
Other waste.
Radioactive GASES and effluents.Risk of cancer.
Comparison to coal-fired generation.
Contrast of radioactive ACCIDENT emissions with industrial emissions

A . DIRECTION of INDUCED CURRENT

A LONGITUDINAL WAVE is the ANSWER

The only time that a WAVE can be TRANSMITTED across a boundary, CHANGE its speed, and still not refract is when the light wave approaches the boundary in a direction that isperpendicular to it. As long as the light wave changes speed and approaches the boundary at an ANGLE, refraction isobserved.