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Gold is ALSO call GOOD conductor of electricity and 1 GM of gold can drow 2 km wire.
copper is a good conductor of electricity because it have free mobile ELECTRONS in the atom.

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ACCORDING to Ohm’s LAW,

V = IR

=v/I

Here, V = 40 V and I = 100 mA = 0.1 A THEREFORE,

=40/ 0.1= 400 Ω

I HOPE, this will help you___❤❤

Thank you

✿┅═══❁✿ ✿❁═══┅✿

Which CLASS of this QUESTION

Due to the REFRACTION of the LIGHT.(Including the DIFFERENCE in the WAVE lengths).

Can you please upload your QUESTION with a SUITABLE diagram. ...,as it doesn't make any sense WITHOUT it

Heyy.. here is your ANS!!
6- and is zero because., displacement is FINAL - INITIAL!! so displacement in CIRCULAR is zero

A beam of cathode rays in a vacuum tube bent into a circle by a magnetic fieldgenerated by a Helmholtz coil. Cathode rays are normally invisible; in this tube enough residual gas has been LEFT that the gas atoms glow from fluorescence when struck by the fast moving electrons.

Cathode rays (also called an electron beam or e-beam) are streams of electrons observed in vacuum tubes. If an evacuated glass tube is EQUIPPED with two electrodes and a voltage is APPLIED, glass behind the positive electrode is observed to glow, due to electrons emitted from and traveling away from the cathode (the electrode connected to the NEGATIVE terminal of the voltage supply). They were first observed in 1869 by German physicist Johann Wilhelm Hittorf, and were named in 1876 by Eugen Goldstein Kathodenstrahlen, or cathode rays.[1][2] In 1897, British physicist J. J. Thomson SHOWED that cathode rays were composed of a previously unknown negatively charged particle, which was later named the electron. Cathode ray tubes (CRTs) use a focused beam of electrons deflected by electric or magnetic fields to create the image on a television screen.

If a charge ‘q’ is moving with velocity v→ enters in uniform magnetic field B→, the magnetic force acting on the particle is given by,

FB = q→V →×B →

The direction of magnetic force is same as v→×B→if charge is positive and opposite if charge is negative.

Cases of Projection

Case I : If velocity of charge particle v→ is parallel to B→ then -



F = q V B Sin 0o ⇒ F = 0

Case II: If a charge enters a magnetic field at right angle to it, it moves in a circular path due to magnetic force which acts as a centripetal force.



Centripetal force is given by –

FB→ = 

mV2r

Where,

m = Mass of the particle,

V = Linear velocity,

r = Radius of circular path.

As we know –

FB = qVB→

Put the value of FB →

∴ qVB = 

mV2r.......(1)
We can derive MULTIPLE relations from the above equation.

Velocity of charge

V = 

qBrm

Observation: As magnetic field increases the velocity of charge increases.

Radius of circular path

r = 

mVqB

Observation: To maintain the radius of circular path, as the magnetic field increases the velocity should also INCREASE.

     

Angular velocity

V = 

qBrm

⇒ rω = 

qBrm

∴ ω = 

QBM

     

q/m is known as specific charge.

     

Observation: Angular velocity depends upon the specific charge and magnetic field.

Time period of rotation

ω = 

2πT

∴ T = 

2πmqB

Observation: As the magnetic field increases, the angular velocity increases and time period of rotation decreases.

Frequency

v = 

1T

∴ v = 

qB2πm

Observation: As the time period of rotation increases, the frequency of rotation decreases.

Kinetic ENERGY of the rotating charge

K.E = 

12

mv2

∴ K.E = 

q2B2r22m

✔✔✔✔Ur answer✔✔✔✔

✔Avul Pakir JAINULABDEEN ABDUL Kalam✔

born on 15 October ✔1931✔ to a Tamil MUSLIM family in the pilgrimage centre of ✔Rameswaram on Pamban Island✔ then in the MADRAS Presidency and now in the STATE of Tamil Nadu.
✔✔✔✔✔✔✔✔✔✔
His father ✔Jainulabdeen✔ was a boat owner and imam of a local mosque his mother ✔Ashiamma✔ was a housewife.

Northern LIGHTS are also KNOWN as AURORA Borealis.

26
Here DITANCE and displacement is same so
AVG SPEED and avg velocity are ALSO same so v1=v2
27
Case1- let S be toral distance
Now, S/3 with v1
So t1=S/3v1

Case2- 2S/3 with v2
So, t2=2S/3v2

Avg speed = S/t1+t2 putting there value
We get, =3v1v2/2v1+v2

Dark matter is a hypothetical kind of matter that cannot be seen with telescopes but accounts for most of the matter in the Universe. The existence and properties of dark matter are INFERRED from its gravitational effects on visible matter, radiation, and the large-scale structure of the Universe. It has not been detected DIRECTLY, making it one of the greatest mysteries in modern astrophysics.
Dark matter neither emits nor absorbs light or any other electromagnetic radiation at any significant level. 
It is estimated to about 85 % in the universe.
Also, It is thought to be the reason of expansion of Universe.
It's still a mystery yet to be UNREVEALED!.



You can ask me any questions on astrophysics . Just Follow me or comment in the comment BOX to KNOW more about astronomical objects.

It is FIRST EQUATION of MOTION.... THANKS

Gogh BBB CHUP CV to bbnmmmmmnjnnnnmmmm.

1.,In making SATELLITES WORK, the law of inertia is used.
2. To make seat belts, the first law of motion is used.
3. To determine speed of cars after collision, THIRD law of motion is used.
4. To make riffles, third law of motion is used.
5. To make several games, the law of inertia is used.

Here is your ANSWER

An resistance of an electric ckt/implement is measured by OHMMETER


Hope it helps and MARK it brainliest

Hiper TENSION conclav

all THREE are UNSTABLE

Answer:

EXPLANATION:

It is CONSIDERED as a RECTILINEAR or translational or one dimensional MOTION, hope you understood.

Because when a challenge is BROKEN many SMALL pecies will be broken and falls down

Firstly CONVERT 300 kilometre into metre i.e.
300km=300×1000
=300000
Also convert hour into seconds i.e.
1hour=60×60
=3600
Therefore SPEED in m/s=300000/3600
=3000/36
=83.34m/s
Hope this is UR answer .If it is PLZZZZ mark it as brainliest answer

Force is a VECTOR quantity because a vector quantity is a quantity which have both MAGNITUDE and direction
I hope it help you...

A. CROWN GLASS 1.52
b. ALCOHOL 1.36
c. DIAMOND 2.42
d. KEROSENE 1.44

Answer ⇒ Option (b). ''ωM/(M+2m)''

EXPLANATION ⇒

Moment of inertia of the ring will be given by the relation,

I = Mr²

Angular MOMENTUM = I⍵

When the MASSES are attached, the moment of Inertia will be given by,

I'= Mr²+ 2mr²

= r² (M+2m)

Assuming that the new angular speed be ⍵'. THEREFORE, the angular momentum = I'⍵'.

By the law of the conservation of the momentum, the angular momentum is always conserved.

∴ I'⍵'=I⍵

⇒ ⍵' = I⍵/I'

⇒ ⍵' =⍵Mr²/(M+2m)r²

∴ ⍵' =⍵M/(M+2m)

Hence, Option (b). is CORRECT.

Hope it helps.

Let SLOPE of velocity-time graph is m.

See the IMAGE.....
It is CLEAR that slope of velocity-time graph is ACCELERATION.

The AVERAGE SPEED of the TRAIN is 60km/hr

According to right hand PALM RULE....the THUMB i.e. magnetic field will be towards (2)....

the RATIO of DISTANCE TRAVELLED is 1:3:5

(p+q):(p-q)=4÷3
p:q=7:1

The EQUATION of motion in general is

V = u +at

As a= 0

v = u

Done!

Yes,its lead to ENVIRONMENT POLLUTION.. because it's STOP rain WATER go underground DUE to plastic non biodegradable.

Answer ⇒ Option (d). ω is INDEPENDENT of r.

Explanation ⇒ In the given Relation,

ω = v/r,

ω is the Constant of Proportionality, v is the Velocity of the Particles which is DIRECTLY proportional to the DISTANCE of the particles from the AXIS (r).

∴ v ∝ r

⇒ v = ω × r

Since, ω is the constant of Proportionality, its value will be remains same for the given VALUES of v and r.

∴ Option (d). is correct.

Hope it helps.

Pollution contributes to the harmful environment that RESULTS in adverse effect on living beings. It is one of the major concern areas for the whole world. It is a global issue INVOLVING the United Nations, governments, voluntary institutions and the media.

Students NEED to be MADE fully aware of the adverse effects of rising pollution. Also, being the future generation, they can play a vital role in controlling pollution if they are familiar with this threat to the survival of mankind.

Here we are providing you some useful articles on pollution under various categories according to varying words limits. You can choose any of them according to your need:

 

Pollution Articles

Article on Pollution 1 (300 words)

Anything added into the environment that results in producing harmful or poisonous effect on living things is called pollution. Pollution is the process that makes nature’s resources such as land, water, air or other parts of the environment unsafe or unsuitable to use. Pollution can be of many types:  soil, air, water, thermal, radioactive, noise, and light. The toxins released are inhaled by each one of us while we breathe.

Pollution and its Causes

Inhaling poisonous air is as hazardous as smoking. It is not only the humans who are affected from this polluted environment but also the animals. Air is filled with highly toxic gases. These dangerous gases in environment are released by the power industries that burn fossil fuels, industries that dispose wastes in the water, farmers using pesticides, high usage of artificial lights and loud sounds, etc. Each of these leads to generation of the life threatening cause – pollution.

Any use of natural resources at a rate higher than the nature’s capacity to restore itself can result in pollution of air, water, and land. Other than human activities, there are a few periodic natural cycles that also result in RELEASE of dangerous stuff. Natural activities other than the human activities like volcanic eruption, dust wildfires, etc also result in creation of pollution.

Globalization is another major cause of pollution. Globalization has become an effective facilitator of environmental degradation.

pictures

Ya i GIVE WAIT i POST a photo wait THANKS it will force/v

<P>Answer ⇒ Option (C). 0

Explanation ⇒ The unit vector A along the axis of the Rotation of the Purely ROTATING body will be Perpendicular to the Unit vector B along the Particle P of the body from its axis.

Mathematically, Angle between them = θ = 90°

Now,

A.B = |A| |B|Cos θ [A.B is the DOT product.]

= |A| |B| Cos 90°

= |A| |B| 0

= 0

Hence, the correct answer is Option (c).

Hope it helps.

Coulomb's law,

It signifies, the inverse square dependence of electric force.

It can also be used to PROVIDE relatively simple DERIVATIONS of Gauss' law for general cases accurately.
Finally, the VECTOR form of Coulomb's law is important as it helps us specify the direction of electric FIELDS due to charges