HIGHLIGHTED QUESTIONS WITH COLOUR ARE FROM 2ND LESSON:
2) ELECTRIC POTENTIAL AND CAPACITANCE
1. Two point charges +5uC and 20uC are separated by a distance of 0.15m. Find the position of
the point on the line joining the two charges, where electric field is zero.
2. Two charges 5uC and -5 uC are placed at points A and B, which are separated by a distance of
0.06m. Find the electric field intensity at a point P on the perpendicular bisector of AB at a
distance of 0.04 m from its middle point.
3. A small spherical conductor of mass 5kg canying a charge of 4uC is suspended from a point
by means of a thread. If the bob is in equilibrium in a horizontal electric field of 17000 Vm ,
calculate the tension in the string and the angle it makes with the vertical.
4. Two charges 10uC and 20uC are placed at the comers of the hypotenuse BC of a right angled
triangle ABC of sides AB = 3m and AC = 4m. Calculate the resultant intensity at the comer A.
MARCH (11#3N5N+5P = 16M)
Answers
Answer:
CHEMISTRY
A solution is defined as a:
A .
Homogeneous mixture of two or more substances
B .
Heterogeneous mixture of two or more substances
C .
Homogeneous mixture of liquid and solid components only
D .
Homogeneous mixture consisting of water as one of the components
A solution is a homogeneous mixture of two or more substances. A solution may exist in any phase.
A solution consists of a solute and a solvent.
The solute is the substance that is dissolved in the solvent.
For example, in a saline solution, salt is the solute dissolved in water as the solvent.
The square root of 2, or the (1/2)th power of 2, written in mathematics as √2 or 21⁄2, is the positive algebraic number that, when multiplied by itself, equals the number 2. Technically, it is called the principal square root of 2, to distinguish it from the negative number with the same property.
Geometrically the square root of 2 is the length of a diagonal across a square with sides of one unit of length; this follows the Pythagorean theorem. It was probably the first number known to be irrational.[citation needed]
As a good rational approximation for the square root of two, with a reasonably small denominator, the fraction 99/70 (≈ 1.4142857) is sometimes used.
The sequence A002193 in the OEIS consists of the digits in the decimal expansion of the square root of 2, here truncated to 65 decimal places: