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he rate of change of velocity.a = (v - U )/tWhere, a is Accelerationv is final VELOCITYU is INITIAL velocityand t is time taken._____________________Types : there are three TYPES if acceleration : Positive accelerationnegative acceleration ( or RETARDATION ) zero acceleration_____________________S.I unit = m/s²

n R = 3Error in VOLUME = 3(ERROR in r) = 3X2 = 6

he rate of CHANGE of velocity.a = (v - u )/tWhere, a is Accelerationv is final VELOCITYU is initial velocityand t is time taken._____________________Types : there are three TYPES if acceleration : Positive accelerationnegative acceleration ( or retardation ) ZERO acceleration_____________________Its s.i unit is m/s²

in momentum = FINAL - INITIAL Final momentum is = 0.05kg × 30 = 3Initial momentum is = 0.05kg × 20 = 1So CHANGE in momentum = 3-1 = 2I hope it will help you out All the BEST with your studies

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fibours ROOT Explanation:ONION has FIBROUS root because fibours root it has MANY roots

most of the spiders are not DANGEROUS..EXPLANATION:HOPE its helpful dear frnd..☺☺plz follow me i will follow U back

tion:YES EVERYBODY respect an honest person because an honest person don't speak to anyone BAD please market BRING list please please please please please FOLLOW me I will follow back

tion:concentration of ACETIC ACID = ( MASS of solute÷mass of SOLUTION)= 30÷2000.15

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This is because air occupies SPACE.The ball will not go in by blowing because the remaining space in the BOTTLE is ALREADY used up by the air, and there is no more space left for the ball to FIT.

-ACCELERATION is a measure of how fast velocity CHANGES. Acceleration is the CHANGE of velocity DIVIDED by the change of time. Acceleration is a VECTOR.

y of bicycle (U) = 5 km / hr time TAKEN (t) = 10 minutes =10/60 hr = 1/6 hr DECELERATION ( use negative sign) = -1 km /hr^2as we know , speed formula let the initial distance covered = D1 d1 = u*t. (distance[d]=speed[u]*time[t]5*1/65/6 km = d1let the final distance covered be d2 , final velocity will become (v)acc. to question :by formula v^2 - u^2 = 2as we have v = 0 ( as it have to be stopped given) putting values (0)^2 - (5)^2 = 2*-1 * d2. as s = d225 = -2 * d2 d2 = 25/ -2 km total distance = d1 + d2

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there are different types of lenses such as BICONCAVE lens,biconvex lens,planoconvex lens,planoconcave lens,concavoconvex lens and convexoconcave lens.among these we USUALLY FIND biconcave,biconvex and concavoconvex lens in optical shop for myopia,hypermetropia and presbyopia respectively.power of lens p=1/f(in metres) and p=100/f(in CM)Explanation:

the MACHINES USE the FRICTION by ELECTRICITY

nomic problem – sometimes called the basic or central economic problem – ASSERTS that an economy's finite RESOURCES are insufficient to SATISFY all human wants and needs. In a free market, the "how" of PRODUCTION and allocation of resources is distributed among economic agents.

tion:√5= 2.2 Two irrational numbers between 2.2...... and 3 are2.14014401444401444440and2.010011001000100011110while writing irrational numbers between any two rational or irrational numbers all u have to care is that the digits do not reoccurs and u can FOLLOW a CERTAIN pattern to get this LIKE I have DONE u can also WRITE these irrational numbers2.112111211111211111122.08008007006005004003.....etc

no force of MAGNETIC FIELD is constantExplanation:F=qvrsin©it will EXPERIENCE force only if the field is VARYING. it induces electric field in that case

tion:because the VELOCITY of both the body is differentMark as brain list PLEASE follow me I will follow you BACK

tion: On the surface of the Earth, the ESCAPE velocity is about 11.2 km/s, which is approximately 33 times the SPEED of sound (Mach 33) and several times the MUZZLE velocity of a rifle BULLET (up to 1.7 km/s)..Hope it helps you

mall elementary length dl cut into circle as SHOWN in figure, dθ is the angle subtended by dl into centre of circle . so, elementary length , dl = RdθNow, F = I(dl × B) = Idl.Bsin90° [ because elementary length are PERPENDICULAR upon magnetic field ] = BIRdθAlso tension acts on just OPPOSITE side of FORCE as you can see in figure .So, at equilibrium condition , 2Tsindθ/2 = BIRdθ actually, dθ/2 is very small angle so, sindθ/2 ≈ dθ/2 Hence, 2Tdθ/2 = BIRdθ T = BIR hence tension in the loop is BIR

your EQUATION is P = B - ax² then [b] = [ML²T^-3] [a] = [MT^-3][a*b] = [M²L²T^-6]

The MAGNITUDE of FORCE is 1.66N

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a = 2I + 4J and b= 3J + 4kSo resultant is a+b = 2i +7j +4kSo, MAGNITUDE is = √2^2 + 7^2 + 4^2 = √69

Reverberation is the collection of REFLECTED sounds from the surfaces in an enclosure like an auditorium. It is a desirable property of auditoriums to the extent that it helps to overcome the inverse SQUARE law dropoff of sound intensity in the enclosure it is used in cinema HALL so that all can have proper sound

tion:excel worksheets are used for1. to arrange no. of EMPLOYEES in the industry2. for MAKING monthly attendance reports of employees & their salaries.3. the data analysis in industries & offices4. for making CALCULATION from the data OBTAINED.

Define force and write its SI unit. ANSWER. Force is a push or a pull that changes or TENDS to change the state of REST or uniform motion of an object or changes the DIRECTION or shape of an object. It causes objects to ACCELERATE. SI unit is Newton.

(C) 50 cmExplanation:WIDTH of the room = 200CM (Given)Length of plane mirror = 10cm  (Given)Distance of the person looking into mirror = 50cm  (Given)In first triangle - TanФ = x/200 --- 1In second triangle - TanФ = 5/50 --- 2Equating both the equations - 5/50 = x/200x = 20cmThus, the height of the wall is 2x+10 = 50The width of the wall he will be able to SEE = 50cm

1.i)13.33km II) 25km/hr

2.Explanation:The MAGNETIC FIELD at the center of the solenoid will be μ₀ni((sin90+sin90)/2) which will be μ₀ni. Since, the angles will be 90 and 90 for the center of the magnetic field.The magnetic field at the ends will be μ₀ni((sin90+sin0)/2) since the two angle of the end is 90 and 0 DEGREE so the magnetic field will be μ₀ni/2. THEREFORE, the ratio will be magnetic field at the center / magnetic field at the end.μ₀ni/μ₀ni/2 = 2.

it is the process by which the substances are converted into gaseous phase from SOLID phase DIRECTLY WITHOUT undergoing the liquid phase  is called sublimationexample --- camphor , NAPHTHALENE balls etc if keep these in OPEN space after few days they will be found missing , but they have sublimated

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udent,◆ Answer -I = 1.397 AV = 11.87 V◆ EXPLAINATION -# Given -n = 6E = 2 Vr = 0.015 ohmR = 8.5 ohm# Solution -For battery of 6 CELLS -E' = nE = 6×2 = 12 Vr' = NR = 6×0.015 = 0.09 ohmCurrent drawn from the supply is -I = E' / (r' + R)I = 12 / (0.09 + 8.5)I = 12 / 8.59I = 1.397 AWe can also calculate voltage across terminal resistance as -V = I.RV = 1.397 × 8.5V = 11.87 VHope this HELPS you...