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Speed of trolley = 2cm / SEC
so , in 3 sec After the START will be 2 CM × 3 sec = 6CM / sec

Heya...

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QUESTION
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A BOY of ten years had CHICKEN POX he is expected to have the same disease

For the rest of life .mention how is it possible ?

ANSWER
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the boy suffered from this disease (chicken pox) . For the FIRST time his body’s immune system will exhibited primary response. with that, of this chickenpox virus was stored in his immune system. whenever the same virus or this disease attacks this boy, the immune system will produce an intense response.and for , preventing the body from getting chickenpox or this disease again. Thus, protecting the boy from getting INFECTED .
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Hope it helps

.mass is CONSTANT EVERY where .
WEIGHT is different at different palaces.

The ratio of the density of a SUBSTANCE to the density of the standard , usually WATER as a liquid or SOLID and here is a gas

Hey
it is your ANSWER. ..



Torque on the dipole in the electric FIELD is:τ = PE sinθwhere θ is the angle between dipole moment(p) and electric field (E)9×10−26= P×104×sin309×10−26×2104 = PP = 1.8×10−29 CM

If you TAKE a sample of the hydrogen, and put it in a test tube, then you will be able to put a lit SPLINT inside it and hear a SQUEAKY pop SOUND!

I hope it helps you, please mark me as BRAINLIEST so that I can become a virtuoso!!

MASS

1) Mass is the quantity of MATTER contained in the body .

2) Mass is a scalar quantity .

3) Mass of a body is same everywhere .

4) Mass is measured by common balance .

5) SI unit of mass is Kg .

6) Mass of a body is NEVER zero .


WEIGHT

1) Weight is the FORCE with which body is ATTRACTED by centre of the earth .

2) Weight is a vector quantity .

3) Weight of a body is different at different places .

4) Weight is measured by spring balance .

5) SI unit of weight is Newton .

6) Weight of the body at the centre of earth is zero .

The ANSWER is that A is only travelling.
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Hope it's correct !!IL

What is MEAN your QUESTOIN

It is same on the PLANE

Heya @user
here is your answer

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It is ratio of permittivity of GIVEN MEDIUM to the permittivity of vacuum is KNOWN as RELATIVE permittivity of a medium.


∈r = ∈medium / ∈freespace


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Hope helped !!

It state that - The total work done is equal to the difference of final and initial kinetic energy
W = 1/2 mv ^ 2 - 1/2 mu ^ 2
You can prove this theorem by F = ma
a = DV /dt
put a value in above equation ..then use formula W = F * dis
After that integrate it u will get ur answer... or theorem

LAW OF CONSERVATION OF ANGULAR MOMENTUM. ZERO , the TOTAL angular momentum of the SYSTEM about that AXIS remains constant." According to the second law of motion net force acting on a body is equal to its rate of change of linear momentum.

★ Ello ★


here is your answer !!!


Q = 10 coulomb



HENCE , object is at the rest
there fore,


no force Acts on charge Q in magnetic FIELD if charge is either at rest or MOVING parallel or anti parallel to magnetic field !!


given by FORMULA



F = BQ v

here


B => magnetic field


Q => charge


F => force


v = velocity


here in this question , object is at rest

so it will given by formula


F = B Q v


F = 10 ^ 5 × 10 c × 0


F = > 0


{ v = 0 }



hence , your answer is => 4


OPTION number D



★ answer => 0 ★ .


hope it helps you dear !!!



thanks !!

From Young’s Modulus FORMULAE:
Y = Fl’/Al
where L’ = 2l/1000
putting all the values we get,
7 x 10^9 = 10^4 * 2l/1000*A*l
solving we get,
A = 1/1400 m^2.

Heyy...

No, as we have to mention in which direction the FORCES are acting.
If both equal forces are in same direction then BODY will move in the direction to which FORCE is applied.
If both forces are OPPOSITE to each other they will cancel out (because they are equal) and body will be at rest only.

Hope it HELPS:-)

The TIME period of a PENDULUM is GIVEN by,

T = 2π√(L/g)

Where, L is the length of the pendulum and g is the acceleration due to gravity.

Thus, the time period DEPENDS on the length of the pendulum and the acceleration due to gravity 

If the velocity time graph of a BODY is parallel to time axis then it STATES that:::

.............................................................
The velocity is CONSTANT while the time is increasing as usuall.

That MEANS the velocity is not increasing so its acceleration is 0
Because acceleration OCCURS when velocity changes.

This is your answer friend...... Hope it helps you.......

Displacement in first (P−1) sec,

S1=12A(p−1)2−−−(I)

Displacement in p sec,

S2=12ap2−−−−−(ii)

(Using, s=ut+12at2 and putting INITIAL velocity, u=0)


ADDING (i) and (ii)

S1+S2=12a(p−1)2+12ap2

=12a[2p2−2p+1]−−−−−−(a)

Displacement in (p2−p+1) th second is GIVEN by

S=12a[2(p2−p+1)−1]

=12a[2p2−2p+1]−−−−−
−(b)

From (a) and (b)
S=S1+S2

PLS. Don't ASK me anything about SPEED because  I forget everything about speed, sorry.

At HIGH altitudes, there's LESS OXYGEN available. This makes the air thinner and drier. The climate inside your nose also gets drier because of this. This makes the BLOOD vessels EXPOSED inside your nose more likely to burst there than at lower altitudes.

I hope it helps u dear ☺️....

The Resistance between any two terminals is ohms.

Explanation:

GIVEN,

The three resistance (R) = 4 ohms

To find, the Resistance between any two terminals = ?

The two  resistance are CONNECTED in series

= 4 + 4 = 8 ohms

The two  resistance are connected in parallel ( 8 ohms and 4 ohms)

⇒

⇒

⇒

⇒ ohms

Hence, the Resistance between any two terminals is ohms.

Answer:

The DENSITY of IRON is 7.8g/cm³  means if we take a iron object with VOLUME = 1 cm³ then weight of that iron object WOULD be 7.8 gm

Explanation:

The density of iron is 7.8g/cm³ what do you mean by this statement

Density = Mass / Volume

Density of iron = 7.8 gm

if we take a iron object with volume = 1 cm³ (for example cubical piece of iron with each sides 1 cm )  Then weight of that iron object would be 7.8 gm

The density of iron is 7.8g/cm³  means if we take a iron object with volume = 1 cm³ then weight of that iron object would be 7.8 gm

Good MORNING friend.
.
if you are asking why most of the a. c. generators use a rotating field rather than a rotating amateur would require slip rings to carry HUGE currents and be insulated for high voltages which is not practicable....
.
.
HOPE it will help U...

Beat PERIOD is GIVEN by
T = 1/(f₁ - f₂)

Given, f₁ = 384 Hz and f₂ = 380
So, T = 1/(384 - 380) = 1/4 sec

∵ time period between maximum and minimum sound = beat period/2
= (1/4 sec)/2 = 1/8 sec

Hence, 1/8 sec will TAKE to hear the minimum sound = 1/8 sec

Let distance = X

Total Distance = x + x = 2x

Time = x / 20 + x/ 30 = 5x / 60

Average SPEED = Total Distance / Total Time

2x / (5x /60) = 2x * 60 / 5x = 24 KM / hr

The torque will be τ = 0.9 N-m

Option (C) is correct.

Explanation:

We are given that:

• Strength of bar MAGNET =  48 Am
• Distance = 25 cm = 25 x 10^-2 m
• Angle = 30°
• Flux density = 0.15 N / Am

τ = mBsinθ  ---- (1)

M = m x L

M = 48 x 25 x 10^-2

τ = 48 x 25 x 10^-2 x 0.15

τ = 0.9 N-m

Thus the torque will be τ = 0.9 N-m

Also learn more

A 40 kg boy SITS 1.2 m from the fulcrum of a see-saw. Where should another boy of 30 kg sit on  the other side in order to balance it?​

brainly.in/question/10615840

Cancer harms the body when altered cells DIVIDE uncontrollablyto form lumps or masses of tissue called tumors (except in the CASE of leukemia wherecancer prohibits normal blood function by abnormal cell division in the blood stream).

HOPE it helps u PLZ mark as brainlist if u satisfied with the answer

The correct answer should be - Zero.

When a bar magnet or magnetic DIPOLE is PLACED in a uniform magnetic field, it will not experience any force but it is BOUND to experience a torque. This torque will align the dipole MOMENT of the bar magnet to align along the direction of magnetic field.

However, if a bar magnet is placed in a non-uniform magnetic field, then it will be subjected to a force and torque.

------here UR answer------
gather (a crop) as a harvest.

"after HARVESTING, most of the crop is stored in large BUILDINGS"

SYNONYMS:gather in, gather, bring in, TAKE in;

HEY!!

THE ANSWER IS HERE,

When a BODY is PROJECTED UPWARDS .then the ACCELERATION of the body will be equal to gravitational force .but in opposite direction.

so, Acceleration of the body => - g

:-) A => -9.8m./s^2

Hope it helps u.

D COSMIC RAYS is SOLUTION of this QUESTION

Q=ne
where Q is CHARGE , n is number of PROTON and E is constant
e= 1.602 * 10^-19
now
5 = n * 1.602 * 10^-19
solve this and get the number of ELECTRON

In the core the passage of the LIGHT will be fast .as COMPARED to CLADDING. Hence REFRACTIVE index of core is always GREATER than refractive index of cladding