A point charge is a mathematical point having no dimensions. It can also be a spherical charged body whose entire charge can be considered concentrated at its centre.

An electric field is a field around a charge where its influence can be felt. A charge influences another charge by a force known as the electrostatic force.

Electric field intensity is a quantity that measures how strong is a field at a given point.

Thus Electric field intensity at a point is defined as  the force experienced by a vanishingly small charge (known as test charge)placed at that point of the field. Electric field intensity is denoted by E and test charge by q_o. Since it involves conception of force, thus electric field intensity is a vector quantity.

Importance of Planning
(i) Planning Provides Directions Planning provides the directions to the efforts of employees. Planning makes clear what employees have to do, how to do etc.
(ii) Planning Reduces the Risk Uncertainty Planning helps the manager to face the uncertainty because planners try to force the future by making some assumptions. The plans are made to over come uncertainties.
(iii) Planning Reduces Over Lapping and Wasteful Activities Planning evaluates the alternatives uses of the available and prospective resources of the business and makes their must appropriate use.
(iv) Planning Promotes Innovative Ideas Planning requires high thinking and it is an intellectual process. So it makes the managers innovative and creative.
(v) Planning Facilitates Decision Making Planning helps the managers to look in to the future and make a choice from amongst various alternative courses of action.
(vi) Planning Establishes Standards for Controlling It has predetermined goal with which the actual performances are compared to find out deviation and suggest remedial measures.

The process of intake of food and utilising it for all life processes is called nutrition.
Ingestion: The intake of food is called ingestion. Method of ingestion, i.e. taking of food, varies from one animal to another.

According to gauss's law

The electric flux through the closed surface is 1/e ​ times the charge enclosed by it.

Where,

e is electrical permittivity

Here,

Electric flux= q​/6e

                   ⇒1​/ 6×8.85×10⁻¹²

                   =1.475×10⁻¹²Nm²C⁻¹

Let us consider that 2 distinct circles intersect at more than 2 points.

∴These points are non-collinear points.

As 3 non-collinear points determine one and only one circle

∴There should be only one circle.
(i.e. those circles are supposed to superimpose each other)
But, the superimposition of 2 circles of different radii is impossible, i.e. concentric circles would be derived instead.

This contradicts our assumption. Therefore, our assumption is wrong.

Hence, 2 circles cannot intersect each other at more than 2 points.

Lewis concept

According to him:

Acids: They are those which accept a pair of electron.

For example: substances that falls in this category:

• Cations like ammonium ion etc
• All neutral electron deficient compounds like BF₃, AlCl₃ etc
• All those which have empty d orbital like SF₄ etc
• All those different elements with different electro-negativities but bonded with multiple bonds like carbon dioxide etc.

Atomic or molecular chemical species having a highly localized HOMO (The Highest Occupied Molecular Orbital) act as Lewis bases. These chemical species have the ability to donate an electron pair to a given Lewis acid in order to form an adduct, as discussed earlier. The most common Lewis bases are ammonia, alkyl amines, and other conventional amines. Commonly, Lewis bases are anionic in nature and their base strength generally depends on the pKa of the corresponding parent acid. Since Lewis bases are electron-rich species that have the ability to donate electron-pairs, they can be classified as nucleophiles. Similarly, Lewis acids can be classified as electrophiles (since they behave as electron-pair acceptors).

The dipole moment of NH3 is higher in comparison to NF3.

REASON

The F i.e. fluorine is more electronegative than N and pulls the electrons . As the number NF bonds is 3 the 3 F atoms pull the electrons. The resulting electronegative forces decrease the dipole moment.

Q u e s t i o n : What does a blind folded woman carrying a pair of weight scale symbolise?
Answer: A blind-folded woman carrying a pair of weighing scales symbolises the 'justice'.

In the seventeenth and eighteenth centuries, political theorists argued that rights are given to us by nature or God. The rights of men were derived from natural law. This meant that rights were not conferred by a ruler or a society, rather we are born with them. As such these rights are inalienable and no one can take these away from us. They identified three natural rights of man: the right to life, liberty and property. All other rights were said to be derived from these basic rights. The idea that we are born with certain rights, is a very powerful notion because it implies that no state or organisation should take away what has been given by the law of nature. This conception of natural rights has been used widely to oppose the exercise of arbitrary power by states and governments and to safeguard individual freedom.

AAPHERD stands for American Alliance for Health Physical Education, Recreation and Dance. In 1965, AAPHER led to the collection of wide ranging records or data and revision of the national norms. The following test items are included in this test battery.

(a) Pull-ups (for boys ) or flexed arm hangs (for girls).

(b) Sit ups to a maximum of 50 (for girls) and 100 for boys.

(c) Shuttle Run.

(d) Standing Broad Jump.

(e) 50 yard dash.

(f) Six hundred yard run/walk.

(g) Softball throw for distance.

In 1976, AAPHER Youth Fitness Test was again revised and the following changes were made :

(a) The softball throw test item was deleted. (b) Fixed number of straight leg sit ups test was changed to bent knee sit-ups performed in 60 seconds.

(c) 600 yard run/walk was made optional and the individuals could opt for their 600 yard run/walk or 9 minute run/walk or 1 mile (for ages 10-12) run/walk i.e., 12 minute run/walk (for ages 13 and above). After the revision of AAPHER Youth fitness test in 1976 or 1.5 mile run/walk, following items were finalized in this test battery.

(a) Pull ups (for boys) flexed arm hang (for girls)

(b) Bent knee sit ups

(c) Shuttle sum

(d) Standing board jump

(e) 50 yard dash

(f) 600 yard or 9 min run/walk

(a) Pull ups

Purpose : To measure arm and shoulder strength.

Procedure : The bar is adjusted according to the height of the boy. The bar is held with his palms facing away from him. He is then asked to raise his body so that the chin reaches the level of the bar. One score is awarded for each pull up. One trial is given before the start of the test. Flexed Arm Hang (for girls)

Purpose : To measure arm and shoulder strength.

Procedure : The bar is adjusted according to the standing height of the girl. The bar is held with over hand grasp. The girl lifts her body up with the assistance of testing personnel so that her chin reaches the bar level. The time in seconds she holds the bar, is taken as her score.

(b) Flexed leg sit ups :

Purpose : To measure abdominal strength and endurance.

Procedure : The youth is asked to lie on the floor on his/her back keeping knees bent. The angle of the knees should be around 90°. The feet are held by the partner, the youth puts hand behind the head with fingers interlocked. Then the youth curls up and touches the elbow to knees. The score is counted as maximum number of sit ups in 60 sec.

(c) Shuttle Run :

Purpose : To measure speed and agility Procedure : Two parallel lines are marked 30 feet apart and two wooden blocks 2× 2 × 4 inches are kept on one side of a marked line. The youth stands behind the line opposite to the line where wooden blocks are placed. At the start signal, youth runs towards the wooden blocks and picks up one of them, carrying it to the line from where the test started. The youth then runs and similarly lifts the other block and places it at the starting line. 

(d) Standing Broad Jump :

Purpose : To measure power Procedure : The youth is asked to stand behind the restraining line with feet apart and he/she bends the knee and swinging arm before jumping. The youth lands on both the feet together. The distance from take-off line to the heel is measured in inches. The best of three trials is recorded as the final score.

(e) 50 yard dash :

Purpose : To measure speed Procedure : The youth is asked to run 50 yards and the time is recorded nearest to one-tenths of a second.

(f) 600 yard run/walk :

Purpose : To measure endurance Procedure : The youth is asked to run/walk for 600 yards and the time is recorded in minutes and seconds.

Q: How did people at the station discriminate against Dr. Ambedkar and his brothers?
Answer:
People at the station discriminated against Dr. Ambedkar and his brothers by refusing them to sit or studying near the upper caste people.

True

Abbreviation of arithmetic logic unit, the part of a computer that performs all arithmetic computations, such as addition and multiplication, and all comparison operations. The ALU is one component of the CPU(central processing unit). An arithmetic logic unit (ALU) is a digital circuit used to perform arithmetic and logic operations. It represents the fundamental building block of the central processing unit (CPU) of a computer.

Benefits or advantages of using conditional formatting: 
i) Helps in answering questions which are important for taking decisions. 
ii) Guides with help of using visuals.
 iii) Helps in understanding distribution and variation of critical data.

Using S = ut + (1/2)at²

S = 500 m

u = 0   Start from rest

a = ?

t = 30 sec

=> 500 = 0 + (1/2)a(30)²

=> a = 1000/900

=> a = 10/9  m/s²

V = u + at

=> V = 0 + (10/9) * 30

=> V = 100/3 m/s

velocity of the aeroplane at the take off​ = 100/3 m/s

Ans: A student considers his teacher special. But there is no interaction between them. So the teacher becomes a mystery. The child wonders if his teacher also do things as other people do. He wants to know about him. He follows a teacher to his home and notes his activities. Then he will write a poem about it.

Commercial Farming: This type of farming is done with sale as the main purpose. In this case, a very large area is cultivated and large amount of capital is utilised. Heavy machineries are used with less emphasis on manual labour. Commercial farming includes commercial grain farming, mixed farming and plantation.

Cricket is an insect related to the grasshoppers but with shorter legs. The male produces a characteristic musical chirping sound.
Cricket is defined as a dark-colored insect with long antenna that jumps, eats plants and makes a chirping sound by rubbing together its forewings. An example of a cricket is the insect that creates the chirping noise heard in rural areas at night

A n s w e r : Anantavarman Chodaganga

The temple was built by the Ganga dynasty king Anantavarman Chodaganga in the 12th century CE, as suggested by the Kendupatna copper-plate inscription of his descendant Narasimhadeva II.;