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<P>Power of the LENS is the RECIPROCAL of the focal length

i.e. p = 1/f

Because of the DECREASE in RESISTANCE

Hey MATE!!!



A in physics is an instrument or an object which is used in a complete CIRCUIT to OBSTRUCT or let the flow of ELECTRIC current through the circuit to make it a closed circuit.

Grooves let the sole flex, maintaining more grip against the ground, thereby preventing the PERSON from falling on the ground. Also, grooves allow small ITEMS such as sand or mud or water some place to GO SOONER, allowing the surface to REGAIN contact with the ground as it slides.
Similarly due to this reason the tyres of a car/bus/bike/cycle are provided with grooves,so as to increase the friction between the ground and the area in contact. Hence, preventing it from skidding.



Hope this helps you :)

Where is URR RELATION BRO.

8+8/888881848848676-5/5273-42%55:55(5)=9877864

Hi....
The ATTRACTIVE force between two or more objects by which they pull other ONE TOWARDS them is called gravitational force...

Formula for it is F = GMm/r^2
Where G is the gravitational CONSTANT
r is the DISTANCE between the objects...

Hope this helps you... ☺️☺️

Given, mass of body = 5 kg
initially,
momentum = m x u(initial VELOCITY) = 20
= 5 x u = 20
u = 4 m/s
now, a force of F = 5N is applied on body, so
F = ma = 5N
so the ACCELERATION produced in given body will be,
a = F/m = 5/5 = 1 m/s2
now, using 1st eq of motion
(or u can use a=V-u/t)
v = u + at
v = 4 + 1 x 10
v = 14 m/s
now, initial Kinetic energy = 1/2 mu^2
=1/2 x 5 x 16 = 40
FINAL Kinetic energy = 1/2 mv^2
= 1/2 x 5 x 196 = 490
now,
change in Kinetic energy = final K.E - initial K.E
= 490 - 40 = 450J
hope this helps, if still u have problems feel free to ask or MSG me
..... :-)

in the ELECTRIC TOWER

Answer is 10CM BEHIND the mirror.


F = -20 cm 

U = -10 cm 

1/f = 1/u + 1/v 

-1/20 = -1/10 + 1/v

= 1/v = 1/20 

v = 20 cm

The ANSWER to this question is very easy KINDLY look at my workings CAREFULLY and you will GET your answer

The IMAGE is INVERTED between F and 2F

This not a CUBE it is the RECTANGULAR table ANSWER was 1239
.

By FORMULA.

60=(2 X 40 x v2) / 40 +x



X=120kmph

When a body is MOVING in UNIFORM MOTION it MEANS that the velocity of the body is constant and the object is moving in a straight line so if an object is moving in a straight line with a constant velocity which means that acceleration is zero it is SAID to be moving uniformly where as in a non uniform motion acceleration is not zero and the velocity is not constant

Heya mate, Here is UR answer

More optically dense the object lesser the speed of light.

optical Density inversely PROPORTIONAL to speed of light .

For example- Light travels with LEAST speed in diamond.

GIVEN :optical Density of MEDIUM x > others optical density

So, speed of light in medium x < speed of light in other medium.

Hence, light travel faster in other medium than x.

==========================

Warm regards

@Laughterqueen

Be Brainly ✌✌

✔✔ Hello mate ✔✔

here's your answer  

At what temperature WOULD the resistance of a copper CONDUCTOR be double its resistance at 0 DEGREE celsius?? (temperature coefficient of resistance for copper = 3.9 multiplied by 10 raised to -3 per degree celsius)

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Hope it HELPS you

v=u+at

a=[v+u] DIVIDE by t

so, at=v=u

hence , v=u+at

try to CONVERT it into HINDI yrself

SORRY

ice

rocks

as venus and MERCURY are the HOTTEST planets so they can MELT EVERYTHING

Hi

Light TRAVELS in a STRAIGHT PATH.

Number of revolution MADE by WHEEL before COMING to rest, RESULT is zero.

The opposite poles of two MAGNETS attract. When the RED end of a magnet or COMPASS is pointing north it is because it is being attracted in that direction by the south end of ANOTHER magnet often coloured blue this is the imaginary magnet inside the earth.

The CONSERVATIVE force is a negative gradient of POTENTIAL force is a dissipative force. Due to DISSIPATION properties we right as gradient of potential and negative sign COMES from its opposite direction of ACTION.

Focal length of converging GLASS lens in WATER. A converging glass lens (n = 1.52) has a focal length of 40 cm in air. Find its focal length when it is IMMERSED in water, which has an INDEX of REFRACTION: nw = 1.33.

D ONE is your ANSWER

CHARLES law:

according to kinetic theory of GASES,

P=ρV²/3

but, ρ=m/v

⇒v=m*V²/3P

at CONSTANT PRESSURE v∝V²

but, according to kinetic theory of gases,

T∝V²

⇒v∝T

Boyle's law:

WK,

Pv=mV²/3

but K.E∝T∝V²

⇒Pv=mV²/3=constant

Pv=constant

⇒P∝1/v

The Sunlight which comes on earth are having LONG waves so they can easily COME but when they come on earth they have short waves so they can't go outside the atmosphere and hence it RESULTS in global warming.

I hope my ANSWER satisfy you.

Production of AMPLITUDE Modulated Wave. Let us assume our base or MESSAGE SIGNAL to be generated as specified above. To produce anamplitude modulated wave we need to superimpose this signal with anothersignal of higher frequency. This signalis the 'Carrier Signal' and differs from one carrier to ANOTHER.

Any field that points opposite to that is a NEGATIVE field. The electric field linesaround a negative CHARGE, THEREFORE, BY DEFINTION, point inward. ... Apositive charge near a negative chargewill be attracted to the negative charge, because positive charges BY DEFINITION FEEL a FORCE in the direction of the field.

When we rub the comb with our hair due to the HEAT the comb is charged with NEGATIVE CHARGE this it get the capacity to ATTRACT the positively charged particles .

hope it HELPS you.
Be brainly.

⛦Hᴇʀᴇ Is Yoᴜʀ Aɴsᴡᴇʀ⚑
▬▬▬▬▬▬▬▬▬▬▬▬☟

➧ WORK = force × displacement cosθ

➧ Force of friction =
Coefficient of friction × normal reaction
➾ 0.2 × mg

➾ 0.2 × 25 × 10
➾ 50 N

➧ Force × displacement

➾ 50N × 20 m
➾ 1000 J ...✔

_________
Thanks...✊

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In Newton's law of cooling, the HEAT transfer coefficient acts as a constant of proportionality. The relation Q = h.A. ΔT, which describes CONVECTIVE heat transfer suggests INCREASE in the heat transfer rate at higher heat transfer coefficient values.

Convection is the bulk MOTION of a fluid, which may occur naturally or forcibly. In this mode, heat transfer is because of the mass transfer.

As our common sense suggests, more the velocity, more the rate of mass transfer and hence more is the rate of convective heat transfer.

Hence heat transfer coefficient increases with the increase in the velocity of the fluid.

The same THING can be proved by dimensional analysis.

Thank you for reading