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option D is the answer.

Sir please tell the reason

100 m/s² = 0.1km/(1/60*1/60)² = 3600*3600*0.1 = 1296000 km/hr²

The case of deflating balloon can be explained by Newton's third law of motion.As the air escapes the balloon, it provides an equal and opposite reaction which makes the balloon move forward.

dont tell this answer using formula

answer it using feelingfeel aani chahiya

answer logically explain kro

Logic and formula are the same.So do you want a logical answer or an explanation?

both

i want both

That's because surface tension is due to intermolecular attraction between the molecules so change in temp results in change in kinetic energy of molecule which further affects attractive force between molecules.But intermolecular attraction has nothing to do with area of surface so it is not dependent on area.

how length depends on surface tension ?explain without using formula.

how length depends on surface tension ?explain without using formula.

Surface tension is the energy required to increase the surface area of a liquid by a unit amount

.Molecules in the interior experience an attractive force from neighboring molecules which surround on all sides

Molecules on the surface have neighboring molecules only on one side (the side facing the interior) and thus experience an attractive force which tends to pull them into the interior

The surface of the liquid will rearrange until the least number of molecules are present on the surface

.The surface molecules will pack somewhat closer together than the rest of the molecules in the liquid

Surface tension is the force per unit length (or surface energy per unit area) acting in the plane of the interface between the plane of the liquid and any other substance. It is also the extra energy possessed by the molecules at the interface compared to that possessed by the molecules in the interior.This tends to minimise the area of the surface.

The SI unit of surface tension is N/m or J/m2.

Its dimensional formula is MT−2.

Surface Tension= Force/LengthDimensional Formula of Force= M1L1T-2Divide it by Length L1

So Dimensional Formula of Surface Tension = M1L0T-2

The surface tension of a liquid decreases with rise in temperature. There is a particular temperature at which the surface tension of a liquid becomes zero. This temperature is called the critical temperature of a liquid.

Surface tension, usually represented by the symbol σ, is measured in force per unit length. Its SI unit isnewton per meter and the cgs unit is dyne per centimeter.

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2) is the correct answer

a is the correct answer

Capacitance for drop => धारिता होगीR/k

where R is the radii. जहां trizya R है

From Volume conservation, आयतन संरक्षण नियम के अनुसार

Vnet = 64V

R^3 = 64r^3

R = 4r

For big drop, बड़ी बूंद के लिए

please like the solution 👍 ✔️👍

C = R/k.......(1)

For small dop, छोटी बूंद के लिए

5 = r/k........(2)

Divdng the eqns. we get, भाग देने पर हमें प्राप्त होगा

C = 5*(R/r) => 5*4 = 20 mF.

A pull or push exerted on a body is called force.

From Work Energy Theorem,

Wtotal = change in kinetic enrgy

-f*x = 0 – k

f = k/x is the required friction force.

Distance covered in nth is

Sn= u+a/2(2n-1)

For n=3, u = 0

S4 = 0 + a/2(2*4 - 1)S4 = 7a/2 m

Similarly,

For n=6, u = 0S6= 0 + a/2(2*6 - 1)

S6 = 11a/2 m

S4/S6 = 7a/2*2/11a

S4:S6 = 7:11

(d) is correct option

lateral strain, also known as transverse strain, is defined as the ratio of the change in diameter of a circular bar of a material due to deformation in the longitudinal direction.

Poisson's ratio is the ratio of the proportional decrease in a lateral measurement to the proportional increase in length in a sample of material that is elastically stretched.

Thedefinite integralof a function is closely related to the antiderivative and indefinite integral of a function. The primary difference is that the indefinite integral, if it exists, is a real number value, while the latter two represent an infinite number of functions that differ only by a constant. The relationship between these concepts is will be discussed in the section on the Fundamental Theorem of Calculus, and you will see that the definite integral will have applications to many problems in calculus.

let me example

Can u say me which formula have u applied

The last quarter of the jouney means 1/4th of the total time it requires in its total journey.

Let total time be 4t, u = 0.

So, v at 3t = 3gt, and at 4t = 4gt.

by v² = u² + 2as,

16g²t² = 9g²t² + 2g(81)

7g²t² = 162g

7gt2= 162

t² = 162 / 7g

t = 1.5 sec.

but time is 4t = 6 sec.

So velocity on reaching = 4gt =58.8 m/s

With this velocity, height of fall = 2t(58.8) =705.6m

Resistance of 10 equal parts = 1/10Rresistance of two 1/10 parts joined in series = 1/5Rlet equivalent resistance be Rp1/Rp = 1/1/5R*51/Rp = 25RRp = 1/25R

1. d2. c3. a4.e5.b

so in watt horse power divide the watt by 746

Kindly post one question per post to experience the instant solution feature of scholr at its best.

see, which u can give answer of that.

1.TheCoefficient of linear expansionof the given solid is denoted as a. then for aunitis per degree Celsius) in the CGS and in the SI system it is per kelvin K-1.The coefficient of linear expansion is the change in length of a specimen one unit long when its temperature is changed by one degree.

2. The amount by whichunitarea of a material increases when the temperature is raised by one degree is called thecoefficient of superficial(i.e. area)expansionand is represented by β (Greek beta).The coefficient of superficial expansion is defined as the increase in area per unit original area at 00c per unit rise intemperature.

3.Increase in volume of a body on heating is referred to as. "VOLUMETRICEXPANSION" or "CUBICAL EXPANSION". Consider a metallic body of volume = V1 . Let it's temperature is raised by T. then experimentally "Increase in volume ( V) is directly proportional to its initial volume (V1) and rise in temperature ( T).

See we have constructed this vector diagram,whereVris the velocity of rain,Vmis the velocity of man, andVrmis the velocity of rain w.r.t man.

So,using Lami's theorem,

Vm/sin30=Vrm/sin60so,(Vrm)=Vm sin60/sin30=10⋅√3=17.31Km/hr

When the man is at rest w.r.t. the ground, the rain comes to him at an angle 37° with the vertical. This is the direction of the velocity of raindrops with respect to the ground. Here v→rg=velocity of rain with respect to the ground v→mg= velocity of the man with respect to the ground. and v→rm=velocity of the rain with respect to the man, We have v→rg=v→rm+v→mg ......(i) Taking horizontal components equation (i) gives vrgsin37∘=vmg3/5

can you please explain it in detail

and the solution is incomplete

1cal=4.186jouls....So you calculate 200cal heat rises temperature into 10 degrees..So we change it into kelvinscale..

Givenm=1000kgu=30m/ss=50m v=0

v^2-u^2=2asa =( v^2-u^2)/2sa= (0^2-30^2)/2×50a= -900/100a= -9m/s^2retardation=9m/s^2

Force exerted by brakes = Mass×Retardation =1000×9 =9000N (Ans)

Work exerted by brakes = Retarding force×Displacement = 9000×50 = 4.5×10^5J (Ans)

time of flight is directly proportional to sinthetahenceT1/t2=sintheta1/sintheta2=sin30/cos60=1/2/1/2=1:1

Kinetic energy=1/2mv2change in velocity means=1/2mv​2- 1/2mu2 ( v= final , and u=intial)taking common, we get=1/2m(v2-u2)=1/2*1000(202-102)=500*300=150000J

thz

I think this is the answer.

I think this is the answer.

I think this is the answer.

Distance = speed * timeDistance = 100 m = 100/1000= 1/10 kmTime = 15 min = 15/60 = 1/4 hrSpeed = Distance /time = (1/10)÷(1/4) = 4/10 = 2/5 km/hr

angular velocity is d∅/dt = 3t²+2t+1 at t = 2sec , d∅/dt = 3*(2)²+2*(2)+1 = 12+4+1 = 17 rad-¹

angular acceleration = d²∅/dt² = 6t+2 at t = 2 => d²∅/dt² = 6(2)+2 = 14 rad-²

hi i am deepak and im in colleage my ans is b

angular velocity = number of revolution / time taken = 4800 / 60 = 80 pie

option (C) is correct.

thaku

maximum tension in the string is T = mg + mw²r = 10*(10+ (5)²*(4/100)) = 10*(10+1) = 110N

thanku