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LetABbe the ladder with end B on the floor. let G be its center. When a body is having both translation and rotation it can be thought of as rotating about instantaneous center. It is changing continuously and is obtained by the intersection of perpendiculars to the direction of motion at any two points on the body,

In this caseAis moving vertically andBis moving horizontally.

If we draw a horizontal line fromAand a vertical line fromBBthey intersect atII.

IB=lsin30°

Now instantaneous angular velocityω=vB/ IB=vG/ IG

It can be seen thatIB=l/ 2

vb=v

Sov/ l/2 =vG/ lsin30∘vl2=

from which

vG=v

the position vector has. magnitude of 1m and angle of 30° so length along x = 1cos(30) = √3/2 ams length along y = 1sin(30) = 1/2.

cot 90+45=- tan45 =-1

tan 225 =1cot 136 =-1sec 240 =-2cosec 300 =-1

cot 135 = -1

Sunlight and water is required

1. By increasing no. of turns in the coil2. By increasing current flowing in the coil.

Chhatrapati Shivaji Maharajis the founder ofMaratha dynastyand a warrior king of the Maratha or Maharashtra people. He is also known asChhatrapati Shivaji Maharaj.

Chhatrapati Shivaji was born in the Shivneri Fort in Maharashtra on 19 February 1630. At 15 years, he conquered the Torna Fort. The Chakan fort and the Kondana Fort were taken by bribing the Adil Shahi governor ll Raje Shivaji, Raje Shivaji killed him with Tiger claws. He became the biggest enemy ofMughalEmperor Aurangzeb. He was arrested in Agra Fort by Aurangzeb. In 1674 he made himself king.

Chhatrapati Shahu Maharaj also known as Rajarshi Shahu was considered a true democrat and social reformer. First Maharaja of the princely state of Kolhapur, he was an invaluable gem in the history of Maharashtra.

Consider earth to be a sphere of radius R and mass M.

The acceleration due to gravity on the surface of the earth is g = GM/R2 , where G is the Universal gravitational constant.

If ρ is the density of the earth, then Mass of earth M = 4πR3ρ/3 ∴ g = G.(4πR3ρ/3)/R2 or, g = 4πRGρ/3.

Consider a body taken to a depth d inside the earth's surface. The body will be attracted by the mass of the earth which is enclosed in a sphere of radius (R - d). If the mass of this portion is denoted by M', the acceleration due to gravity at the point by g', Then, g' = GM'/(R − d)2 , where M' = 4π(R−d)3ρ/3. g' = G94π(R−d)3ρ/3)/(R − d)2 g' = 4π(R−d)Gρ/3. g'/g = (R-d)/R or g' = g(1-d/R)

This gives the variation of g with depth d.

Violation of salt laws was followed by violation of many laws across the various parts of the country.

Under the leadership of Khan Abdul Ghaffar Khan a society of Khuda-i-khidmatgars was formed.

The members of this society were pledged to follow non-violence and participate in freedom struggle.

Gaffar Khan was arrested and demonstrations were held in Peshawar protesting against the arrest.

The platoon of Gharwal refused to open fire against the demonstrators and hence their commander Chandra Singh Thakur was court martialed and severely punished.

thank you so much

Thischangingof theseasonstakesplacebecause the plane ofEarth'sequator is tilted 23.5 degrees to our orbit around the sun. During the course of the year, varying amounts of sunlight strike different regions of our planet.

There are 2 basic methods.

a)Using the physical measurements of a regular object (like a box) we multiply the width by the depth and then multiply that by the height. WxDxH

b)If it is irregular (weird shaped or inconvenient to measure) you can use displacement. To do that you submerge the object in a known quantity of liquid and then note the measurement of the liquid while the object is completely submerged. The volume of the object is the measurement of the liquid with the object submerged minus the initial measurement of the liquid. For example if you start with 77 ml of water and when the object is submerged you have 97 ml of water then you can calculate the volume of the object by taking 97–77 which equals 20 ml.

a) LICHENTHEY LIVE IN A SYMBIOTIC RELATIONSHIP

D) is a right answer

A option is the right

correct answer is option no. (A)

lichen is mutual beneficial association between algae and fungi

option( D ) blue green algae is right answer

a) LICHEN They live in a symbiotic relatinship

option (a) ............,.....

Lichenlichen is a long living composite organism that arises fromalgaeor cyanobacteria (or both) livingamongfilamentsofafungusin amutually beneficial relationship(symbioticrelationship).

option (a) Lichen is Right answer

A)Lichen is the right answer because they live in the symbiotic association and fulfill each other needs

Answer is option A because lichen is a long living organism that arises from algae or cyanobacteria

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a)LICHENas algae and fungi live in symbiotic relationship

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option AIS CORRECT..LICHEN

Lichen (symbiotic relationship)

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the best answer is the option A

A is the correct Ans. for this question _lichen

A lichen is a long living composite organism that arises fromalgaeor cyanobacteria (or both) livingamongfilamentsofafungusin amutually beneficial relationship(symbioticrelationship). Thealgalcomponentofa lichen is known as phycobiont and thefungalcomponent is called mycobiont

a is the right answer.

(a)Lichen right answer for this question

LichenA lichen is a composite organism that arises from algae or cyanobacteria living among filaments of multiple fungi species in a mutualistic relationship. The

A) Lichen is the correct and😊

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A-Lichen is the correct answer

Lichen a is the right answer

Lichen is the correct answer.

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Ans a. They live a symbiotic relationship

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a) Lichen is a right answer

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D answer is right (blue green algae)

a] Lichen They Live in symbiotic relationship

the answer is lichen it arise from both

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lichen because it have a master slave relation b/w algae and fungi

A) LICHEN..................

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lichens are mutual association bt algae nd fungi

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a Lichen yahi sahi answer hai

Option A) Lichen is ringhIn my mind

d) Blue green algae right answer

a) lichen they lives in symbiotic rel.

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(a) Lichen is the write answer.

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The correct answer is (a) Lichen

a) lichen because they live in a symbiotic relationship ...

Option (A)is right Answer

Answer option ( A ) Lichen

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Mutual beneficial association between algae& fungi are (A) Lichen

The correct answer is lichen I e a

A)lichen the fungal component is called mycobiant

lichen because mycorizza is association of tree root and fungi

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option a is correct lichen

a) lichenThey show a symbiotic relationship i.e give and take type relationship

lichen a right answer

The electric generators and dynamos uses rotating magnets to induce an electric current in conducting wire coils surrounding the generator's armature.

given the height = 1.6m. and since the water drop detaches from tap. so the initial velocity ia 0. no using Newton's second formula of motion.s= ut + 1/2gt² , where s= 1.6m , u= 0 , and g= 10m/s². so 1.6=0 + 1/2×10×t².=> t² = 1.6× 2/10. => t²= 0.32=> t = √0.32. = 0.5656secs the answer would be C = 0.57secs

si unit energy of both the energy is joule. KINETIC energy of a body in motion. and potential energy is the energy stored in the body

A clear cloudless day-timeskyisbluebecause molecules in the air scatterbluelight from the sun more than they scatter red light. When welooktowards the sun at sunset, we see red and orange colours because thebluelight has been scattered out and away from the line of sight

Sky is blue because molecules in the air scatter blue light from the sun more than they scatter red light. When we look towards the sun at sunset, we see red and orange colours because the blue light has been scattered out and away from the line of sight.

sky is blue because molecules in the air scatter the blue light more than the red light from the sun.

As it is rolling without slipping .Hence the velocity of the point touching the ground. ie A should be 0.So Velocity of centre of mass= (Radius of sphere)×(angular velocity of sphere).

Accounting is the process or work of keeping financial accounts.

let the no. of step be n we have to find the horizontal range = n(0.20)n*(0.20) = (1.8)t => t = n(0.20)/1.8

now n(0.20) = 1/2gt² putting the value of t in 2nd equation..=> n(0.20)*2 = g(n*(0.20))²/1.8²)=> 2*1.8*1.8 = 10*(n*(0.20)=> n = (2*1.8*1.8)/2 = 3.24

since n = 3.24 , so it will cross third stepso the value will br greater that 3rd step

4th step.. is the answer.

The Potentiometer Y has a lesser potential gradient (V/l) than the Potentiometer X. The Potentiometer Y will need comparatively more length to measure the same potential difference. Therefore, it will be more accurate and sensitive. Hence, the Potentiometer Y will be prefered than the Potentiometer X.

Option (3) is the correct answer.

A system of concurrent forces (as shown in the figure) inclined at 120 degrees gives zero resultant force.

false might be the answer

radius of nthorbit, rn= 0.529n2Å.

I want 5 mark but thank you for ur ans.

Forces acting on the mass are mg in downward direction and pseudo force in backward direction of the acceleration. = ma.

so the angle ∅ is tan⁻¹(g/a)

and the value of tension is net force on it that is √(mg² +ma²) = m√(g²+a²)

option a and c are correct.

Case (1st)if the length of side is doubled=> side of square =2aAndArea = (2a)² = 4a²

that means ...Area become four times of Area when length of side is doubled.

Case (2nd)

if length of side is tripled=> side = 3a=> Area of square = (3a)² = 9a²

that means..Area become 9 times when side of square is tripled.

Case(3rd)

if length of side is halved=> side = a/2=> Area of square = (a/2)² = a²/4

that means..Area become one-fourth when side of square is halved.

Case (1st)if the length of side is doubled=> side of square =2aAndArea = (2a)² = 4a²

that means ...Area become four times of Area when length of side is doubled.

Case (2nd)

if length of side is tripled=> side = 3a=> Area of square = (3a)² = 9a²

that means..Area become 9 times when side of square is tripled.

Case(3rd)

if length of side is halved=> side = a/2=> Area of square = (a/2)² = a²/4

that means..Area become one-fourth when side of square is halved.