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No RO WATER cannot be USED in BATTERIES

The difference between AC and DC LIES in thedirection in which the electrons flow. In DC circuits, ELECTRICITY FLOWS in ONE direction. In AC circuits, the electricity switches DIRECTIONS, sometimes going forward and sometimes going backward. ... AC reverses its direction while flowing in a circuit

In an electric CIRCUIT a battery and bulb have been CONNECTED and the battery consists of two CELLS of equal potential difference if the bulb is not GLOWING then which test will you PERFORM in order to find out the reason for the bulb not glowing

To LIVE our life with dignity N respectfully. with peace n tranquility. to COMPLETE our plans

Length of rectangular loop, l = 8cm = 0.08m
WIDTH of rectangular loop , b = 2CM = 0.02m
area of loop, A = l × b = 0.08 × 0.02 = 1.6 × 10^-3 m²
magnetic field strength, B = 0.3T
velocity of the loop, v = 1 cm/s = 0.01 m/s

(a) emf developed in the loop is GIVEN as
e = Blv
= 0.3 × 0.08 × 0.01 = 2.4 × 10^-4V
time taken to travel along the width,t = distance travelled/velocity = b/v
= 0.02/0.01 = 2 s

hence, the INDUCED voltage is 2.4 × 10^-4V which lasts for 2s

(b) emf developed , e = Bbv
= 0.3 × 0.02 × 0.01 = 0.6 × 10^-4V
time taken to travel along length , t' = l/v
= 0.08/0.01 = 8S
hence,the induced voltage is 0.6 × 10^-4V which lasts for 8s

I have SOLVED ... you can further SOLVE it

Hi

The twinkling of a star is due to atmospheric refraction of the light rays coming from the star . The distance between a star and the earth is of many lightyears, so its light has to travel through many layers of the atmosphere in order to REACH Earth. The density of the layers of the atmosphere VARIES, - density of the layers increases towards the Earth's SURFACE causing refraction of the star's light each time it travels to a layer whose density differs. A ray of light travelling from outer SPACE bends continuously(towards the normal) after it enters the dense atmosphere of the Earth. The continuously changing atmospheric density refracts the light from stars by varying amounts and in different directions from one moment to the next. This causes the amount of starlight reaching our eyes to CONSTANTLY fluctuate,( it decreases and increases alternately) making it look as though the star is twinkling. However the star does not actually twinkle or shift from its original position.

Some questions that would have raised in the mind of DIVYA are

1) What makes the CART move forward EVEN if the cart pulls the horse back.

2) Does Newton Third law of motion applicable to this condition?

3) What are the forces on the cart?

4) Which forces are GREATER so that net force is making the cart move ?

5) Net force on the system is zero or not?

6) Are horse and cart exert force on each other, or there are any other forces ?

THANKS for asking the QUESTION!

ANSWER::

Final Kinetic Energy = 0.2 J

Initial Kinetic Energy = (1/2) mV₁² + 0 = (1/2) x 0.1 u² = 0.05 u²

mv₁ = mv₂ = mu

v₁ = Final velocity of 1st block

v₂ = Final velocity of 2nd block

v₁ + v₂ = u              Equation - 1

(v₁ - v₂) + L(a₁ - u₂) = 0

La = v₂ - v₁               Equation - 2

u₂ = 0 u₁ = u

Adding Equation - 1 and Equation - 2

2v₂ = (1 + L) u

v₂ = (u/2)(1 + L)

v₁ = u - u/2 - uL/2

v₁ = u(1 - L)/2

Given :-

(1/2) mv₁² + (1/2) mv₂² = 0.2

v₁² + v₂² = 4

[u²(1 - L)²] / 4 + [u²(1 + L)²] / 4 = 4

[u²(1 + L)²] / 2

u² = 8/(1 + L²)

For maximum value of u , denominator should be minimum,

L = 0

u² = 8

u = 2√2 m/s

For minimum value of u , denominator should be maximum,

L = 1

u² = 4

u = 2 m/s

Hope it helps!

Thanks for asking the question!

ANSWER::

Mass of BALL , m₁ = 0.5 kg

VELOCITY of ball , v₁ = 5 m/s

Mass of ANOTHER ball , m₂ = 1 kg

Let velocity of another ball = v₂ m/s

Using law of CONSERVATION of MOMENTUM ,

0.5 x 5 + 1 x v₂ = 0

v₂ = - 2.5 m/s

Therefore , the velocity of another ball is 2.5 m/s opposite to the direction of motion of first ball.

Hope it helps!

Resistivity : when a CONDUCTOR has LENGTH 1m
and CROSS sectional area is 1m²,then resistance of conductor is CALLED resistivity.
R=pl/A
put l=1m and A=1m².
R=P
this resistance is called resistivity.
resistance of a conductor DEPENDS on dimensions of the conductor(volume ,length,area).

The MODULUS of ELASTICITY is DIMENSIONALLY EQUIVALENT to STRESS.

The ANSWER is PART C HOPE its RIGHT.

Because the FALSE CEILING has air TRAPPED in it and as air is a bad conductor of HEAT the doesn't move from room to outside . this keeps the room warm in WINTER

MERCURY is USED as a barometer liquid because it is a liquid METAL at ROOM temperature.

Given in the question :- Refer to the attachment

Force of 6N is ACTING on a BODY with the ANGLE 30°, Now we have to resolve the force of 6 N along the wrench and perpendicular to it.

Now, Total TORQUE working on point A = 0

Hence The force component which is perpendicular to the wrench

then

P' =3.0 N

The torque ( nut ) = 3.0 × 8/100

=0.24 N-m----(i)

The torque of force F (nut)

= F× 16/100 N-m------(II)

Equating the two we get,

F = 24/16

F =3/2

F=1.5 N

Hope it Helps :-)

MOMENTUM of the bullet equals the momentum of the gun.

Momentum equals to :

MASS × Velocity

We substitute into the formulae and get :

0.03 × 330 = 10 × V

9.9 = 10V

V = 0.99 m/s

Momentum before firing is zero since both the gun and the bullet are at rest and their velocities are zero.

Momentum after firing is equal to momentum of the gun plus the momentum of the bullet which are equal and opposite.

This is THEREFORE :

330 × 0.03 × 2 = 19.8Kgm/s

Because they are ACTING on TWO BODIES HENCE they don't CANCEL each other

┏─━─━─━─━∞◆∞━─━─━─━─┓
✭✮ӇЄƦЄ ƖƧ ƳƠƲƦ ƛƝƧƜЄƦ✮✭
┗─━─━─━─━∞◆∞━─━─━─━─┛

Force➫ Any interaction that when unopposed will change the motion of an object.

♦ It's SI unit is Newton (N).

♦ It has both magnitude & DIRECTION, making it a VECTOR quantity.

♦ It can cause an object with mass to change its velocity to accelerate.

➊❭ Effects 0f Force are:-
▬▬▬▬▬▬▬▬▬▬▬▬▬⤵

❱ It can make a stationary object move or change its position of rest.

♦Ex:- When you kick a stationary Football it will in motion.

❱ It can change the speed of a moving object.

♦Ex:- When goalkeeper applies force to stop the football.

❱ It can change the direction of motion of a moving object.

♦Ex:- When a batsman hits a ball.

❱ It can change the shape or size of an object.

♦Ex:- When you squeeze a sponge.

❷❭ Types 0f Force are:-
▬▬▬▬▬▬▬▬▬▬▬▬▬⤵

❲1❳ CONTACT Force➫ A force that acts only when it is in contact with an object.

♦Ex:- PUSHING a car up a hill.

❱ Types 0f Contact Force:-
▬▬▬▬▬▬▬▬▬▬▬▬▬⤵

❱ Muscular➾ The force which is exerted by the muscle of your body.

♦Ex:- When you lift your School's Bag.

❱ Frictional➾ The force generated by two surfaces that contacts & slide against each other.

♦Ex:- A person sliding down a slide.

❲2❳ Non-Contact Force➫ A force that acts on an object without being in contact with it.

♦Ex:- Leaves falling from a tree.

❱ Types 0f Non-Contact Force:-
▬▬▬▬▬▬▬▬▬▬▬▬▬⤵

❱ Gravitational➾ A force that attracts any two objects with mass.

♦Ex:- Leaves falling from trees.

❱ Magnetic➾ The force that arises due to the motion of charged particle within the magnetic field.

♦Ex:- Iron pin attracted to magnet.

❱ Electrostatic➾ The attraction or REPULSION of particles or objects because of their electric charge.

♦Ex:- When you rub a comb in hair.

_________
Thanks...✊

ANSWER: The RATIO of the INTENSITY of MAXIMA and minima is 25:16.

Explanation:

Given that,

Ratio of intensity

We know that,

The intensity of maxima is

...(I)

Put the value of and in equation (I)

The intensity of minima

....(II)

Put the value of and in equation (II)

Now, the ratio of the intensity of maxima and minima

Hence, the ratio of the intensity of maxima and minima is 25:16.

Mercury is used in the experiments o demonstrate anaerobic respiration because: It is the only metal which occurs in liquid state and is a good conductor of HEAT. It does STICK to the walls of the capillary and hence, gives accurate RESULTS. It has a uniform rate of EXPANSION and CONTRACTION.

No SOUND can't TRAVEL through VACUUM

HEY DEAR HERE IS YOUR ANSWER ✌ ✌❤ ❤

Special optical devices called low VISION aids often can ENABLE people to use their  REMAINING  vision more effectively and do things they thought  were no longer  possible . These  devices include  CUSTOMISED  magnifiers for reading , computerised  text to SPEECH  devices .

HOPE IT HELPS U.✌✌
# BE BRAINLY.❤❤

So,

While PASSING the tunnel it takes 35sec

Displacement = Velocity × Time

Therefore,

L(TRAIN) + L(Tunnel)

= 42 × 35 = 1470m

Now,

It takes 15 sec to pass a pole

So,

L(Train)

= 15×42= 630m

L(Tunnel) = 1470 - 630 = 840

So,

The LENGTH of tunnel is 840m

Advantages
1. This reduced the SHIPPING costs and lowered meat prices in EUROPE.

2. The POOR in Europe could now CONSUME a more varied diet.

3. To the earlier, monotony of Bread and Potatoes many, not all could add meat, butter or egg.

5. Better living conditions promoted social peace within the country and support for imperialism ABROAD.

I think the answer is +20 because area under the graph DEPICTS velocity. so area of POSITIVE slpoe or triangle is +30 and negative is -10...on SOLVING the answer is +20...i still am not sure

When 4 resistors each of 4 OHM are connected in the form of a SQUARE, then the arrangement will look as that shown in the picture.

The equivalent resistance between 2 opposite corners of the square is 4 ohm.

hope it helps!!

Hey mate here's your answer
This is because of the NEWTON's third law of motion to every ACTION there is an equal and OPPOSITE reaction.When runner PUSH the ground the ground also push the runner with an equal and opposite force which he utilizes to run fast.runner push the groundso he can gain more reaction force from ground.the harder the runner pushes

It can be described as the motion of an object with a circular path . EG moving of EARTH in its orbit , a stone TIED to a THREAD is swing mark it as brainiest ANS.

It's 1637 TIMES of ELECTRON

REFER to some EDUCATIONAL APP

Just INTEGRATE it.
Ans t^2+3t

Let us first decide the directions which can best represent the situation.
angle of dip , =35°
Earth's MAGNETIC FIELD, B = 0.39G
horizontal component of earth's magnetic field,=Bcos\delta=0.39cos35°
= 0.32G

similarly, vertical component of earth's magnetic field,
=0.39sin35° = 0.22G

telephone cable carry a total current of 4A in direction east to west . we want RESULTANT magnetic field 4cm below as shown in figure.
we have to find magnetic field DUE to wire ,


now, see figure,
net magnetic field,

Given, Magnetic moment, M = 0.48J/T
distance of observation POINT from centre of the magnet, R = 10cm = 0.1m

(a) we know, magnetic field on AXIAL LINE due to magnetic dipole is given by ,


= (10^-7 × 2 × 0.48)/(0.1)³ = 9.6 × 10^-5T ALONG S-N direction.

(b) magnetic field on equatorial line due to magnetic dipole is given by ,


= (10^-7 × 0.48)/(0.1)³ = 4.8 × 10^-5 T along N-S direction.

Characteristics of ELECTRONS, Protons and Neutrons.

Characteristic - Symbol.

Proton → 'p'

Electron → 'e'

Neutron → 'n'

Characteristic - Relative Mass

Proton → 1

Electron →

Neutron → 1

Characteristic - Relative Charge

Proton → +1

Electron → -1

Neutron → 0

Characteristic - Position

Proton → INSIDE the nucleus.

Electron → OUTSIDE the Nucleus.

Neutron → Inside the nucleus.

Characteristic - Actual Mass

Proton → 1.6 × 10⁻²⁷ Kg.

Electron → 9.1 × 10⁻³¹ Kg.

Neutron → 1.6 × 10⁻²⁷ Kg.

Characteristic - Discovered By

Proton → Goldstein

Electron → J.J Thomson

Neutron → JAMES Chadwick

Thanks for ASKING the question!

ANSWER::

LET height be 'h' from where the BALL of mass m is DROPPED ONTO a floor.

Before collision => v₁ = √(2gh) and then v₁ = 0

After collision => v₂ = - √(2gh) and then v₂ = 0

Rate of change of velocity , F = [m x 2√(2gh)] / t

Now , v = √(2gh) , s = h , v = 0

v = u+at

√(2gh) = gt

t = √(2h/g)

Total time = 2√(2h/g)

F = [m x 2√(2gh)] / [2√(2h/g) ] = mg

Hope it helps!

Fleming's Right Hand Rule DETERMINES the DIRECTION of INDUCED current .
the rule STATES that,stretch forefinger middle finger and thumb MUTUALLY perpendicular to each other, then if thumb shows direction of motion of conductor and forefinger shows direction of magnetic field then middle finger shows direction of induced current

As p=f/m so AIR has LESS MASS and less is the mass and more is the PRESSURE

Let tension between the blocks is T
here you can see hence , net force acts in right direction.

for block of mass 2 KG,

T - 10 = 2a.........(1)

for block of mass 4kg,

20 - T = 4a.......(2)

solve equations (1) and (2),
10 = 6a => a = 5/3 m/s²

so,from equation (1), T = 10 + 10/3 = 40/3 N

hence, option (B) is correct.

Hey there!
we USE umbrella on a hot SUNNY day as it cut the HEAT RAYS from the SUN