# Archives

## If the roots of (k+1)x2 – 2(k+1)x +1 = 0 are real and equal ; then find the value of k

Given, (k+1)x2âˆ’2(k+1)x+1=0 is a quadratic equation. The roots of the given equation are real and equal. Therefore, the discrimant will be... View Article

## Write down the domain and range of sinx.

Domain of sin x is all real numbers Range: sin x ∈ [-1, 1]... View Article

Let me be helped or You are requested to help me.... View Article

## State difference between the blood vessels artery vein and capillary.

The differences between artery, vein and cappilary are: Arteries Veins Cappilaries Thick wall and elastic tubes that carries blood from... View Article

## All desire wealth and some acquire it. Change into passive

Wealth is desired by all and acquired by some.... View Article

## What is the noun form of the word free?

The noun form of the word free is 'freedom'.... View Article

## Arrangement of flowers on the floral axis of plant is: A.Inflorescence B.Phyllotaxy C.Placentation D.Corymb

Answer: A.Inflorescence Arrangement of flowers on the floral axis of plant is called Inflorescence.... View Article

## When and by whom was the civil disobedience movement launched?

Mahatma Gandhi launched the Civil Disobedience Movement (Dandi March) on 1930.... View Article

## A spherical conducting shell of inner radius r1 and outer radius r2 has a charge Q. (a) A charge q is placed at the centre of the shell. What is the surface charge density on the inner and outer surfaces of the shell? (b) Write the expression for electric field at a point x r2 from the centre of the shell.

(a) Charge at the outer surface of the spherical shell is Q Since, charge q is placed at center, thus the charge induced at the inner surface is... View Article

## A rod PQ of mass M and length L is hinged at end P. The rod is kept horizontal by a massless string tied to point Q as shown in figure. When string is cut, the initial angular acceleration of the rod is.(a) 2g/L (b) 2g/2L (c) 3g/2L (d) g/L

Answer: (c) 3g/2L If IÂ is moment of inertia of the rod about the end P andÂ Î± is initial angular acceleration of the rod, then; Ï„=IÎ±=Mg x L/2... View Article

## The example of phosphoprotein is: A. Mucin B. Fibrinogen C. Casein D. Myosin

Answer: C. Casein Phosphoproteins is a Conjugated Proteins.  Proteins in combination with a phosphorous group. The example... View Article

## Find the answers for 64 power 1/6

64 raised to the power 1/6 is given by: 641/6 =(26)1/6 By laws of exponents, = (2)6 .1/6   = 2... View Article

## The book social contract was written by:

The book social contract was written by Jean-Jacques Rousseau.... View Article

## Factorise:x^2-8x+15.

x2−8x+15 By splitting the middle term,  =x2−5x−3x+15 =x(x−5)−3(x−5) =(x−5)(x−3) Hence,... View Article

## Egg shell is made up of a chemical. In which of the two ores this chemical is present? a.) Limestone: CaCO3â€‹, Dolomite: CaCO3.MgCO3 b.) Limestone: CaCO3.MgCO3â€‹, Dolomite: CaCO3 c.) Limestone: Ca2CO3, Dolomite: Ca2CO3.MgCO3 d.) None of these

Answer: a.) Limestone: CaCO3, Dolomite: CaCO3.MgCO3 Egg shells are made up of calcium carbonate (CaCO3) crystals... View Article

## Write the names of isotopes of hydrogen. What is the mass ratio of these isotopes?

The three isotopes of hydrogen are protium (1H1), deuterium(1H2), and tritium(1H3). The mass ratio of protium, deuterium and tritium is 1:2:3.... View Article

## What is period of the decimal 2.3636363…?

The period of the decimal 2.3636363... is 36.... View Article

## What is the noun form of the word poor?

The noun form of the word poor is poor only. For example, he is a poor man.... View Article