(1) Profession is an economic activity that requires special knowledge and skill to be applied by
individuals for earning their living.
(2) Individuals engaged in professions are known as
professionals.
(3) These professionals have to follow the guidelines or codes of conduct laid down by professional bodies.
(4) For example, doctors are professionals engaged in the medical profession and have to follow the codes of conduct laid down by the Medical Council of India.

Angle of Friction beween any two surface in contact is defined as the angle which the resultant

of the force of limiting friction F_lim and normal reaction N makes with the direction of normal reaction N

as shown in figure. It is marked in the figure as θ.

The value of angle of friction depends on the material and nature of surfaces in contact. 

It can be seen from figure, tanθ = AC/OA = F_lim / N = μ , where μ is coefficient of limiting friction

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The angle of repose or angle of sliding  α is defined as the minimum angle of inclination of a plane

with the horizontal such that a body placed on the plane just begins to slide down.

Its value depends on the material and nature of the surface in contact. 

from the figure it can be seen that, f =mg sinα ...............(1)
N = mg cosα ....................(2)

hence we get,  f / N = tan α = μ  

The narrator went to no. 46, Marconi street in search of her mother’s household things such as the cutlery, silver ware, crockery, antique pieces, etc, which her mother had given to Mrs. Dorling to take care of before they ran away for safety reasons during the war. This was Mrs. Dorling's address. Now, the war had ended. Life had returned to normalcy. She had come back to her native city. She needed those things back; besides she felt emotionally connected to her mother’s things. Those things had become very important to her after her mother’s death. So, she wanted to repossess those things.

Q u e s t i o n : What is the maximum possible resultant of two forces 2N and 1N.

A n s w e r ; 3N

3 N is the maximum  possible resultant of two forces 2 N and 1 N.

Distance traveled in n th second is given by:
Sn​=u+1/2a(2n−1)

Let 'u' be the initial velocity and 'a' be the uniform acceleration of the body.

The Bedouins were nomadic Arab tribes.

i.They moved from dry to green areas (oases) of the desert in search of food (mainly dates) and fodder for their camels.

ii. Some settled in cities and practised trade or agriculture.

The Bedouins were nomadic Arab tribes.

i.They moved from dry to green areas (oases) of the desert in search of food (mainly dates) and fodder for their camels.

ii. Some settled in cities and practised trade or agriculture.

On July 7, HRD Minister Ramesh Pokhriyal announced a major CBSE syllabus reduction with 30% of the syllabus slashed for the year 2020-21 for classes 9 to 12 because of the reduction in classroom teaching time due to the Covid-19 pandemic and lockdown.

CBSE has rationalized the syllabus with the help of suggestions from NCERT and the same has been notified by a new CBSE notification as well.

• <a href="http://cbseacademic.nic.in/web_material/CurriculumMain21/revisedsyllabi/Deduction/DELETEDPhysical_Education_2020-21.pdf" rel="noopener" target="_blank">Physical Education</a>  (Deleted topics)

• <a href="http://cbseacademic.nic.in/web_material/CurriculumMain21/revisedsyllabi/SrSecondary/REVISEDPhysicalEducation_Sr.Sec_2020-21.pdf" target="_blank">REVISED - Physical Education</a> (Revised Syllabus)

1. Quantitative expression of  economic  problems: Statistics  is  an  essential  tool  for  an  economist  to understand  the  problems  of  an  economy through  quantitative  data. Example: The problem  of poverty in  India  can be  quantitatively  expressed  as there  is a substantial  decline  in poverty  ratios  in India from 55% in 1973to 36% in1993.
2. Inter-sectoral and inter-temporal comparisons: This quantitative data is further used to make inter-sectoral comparison ,i.e. across   different   sectors   of   the economy   and   inter-temporal comparisons ,i.e. over different plan periods of the rural and urban unemployment.
3. Cause  and  effect  relationship: Different  sets  of  data  are  used  to  find  the  cause  and  effect relationship. This enables policy makers to formulate policy to solve the problem of an economy.
4. Economic  equilibrium: Statistical  data  helps  economists  to  understand  the behaviour  of  the producer  and  consumer  in  the  market. Example: How the  producer choose sthe  combination  of inputs to produce the goods to maximise their profit.
5. Developing  economic  theories: This  also facilitates economists to  develop  theories as  how  the prices of goods vary in relation to the demand for the product.
6. Forecasting: Statistical  data  are  useful  to  forecast  the  changes  in  the  factors  which  influence  other factors. This information enables economists to formulate polices and suggestions to overcome the problem.
7. Formulation   of   policies: Statistical   data   is   essential   for   formulating   policies   of economic development. Example: If the  government  wants  to  formulate  or  modify  labour  laws,  then it will require statistical data on working conditions, number of working hours and minimum wages received by workers.

Answer:
After the goldfinch arrives on the tree, the silent and still Laburnum tree suddenly starts trembling and moving. The whole tree comes to life as the chicks of the goldfinch make a lot of noise as they chitter and trill on seeing their mother.

Answer:
There was sound, activity and movement when the bird came, there was plenty of chirping. She went in to feed her chicks and the whole tree seemed to vibrate with the fluttering of wings and the shrill sound of her chicks.

Q : Describe the laburnum top.
A n s w e r:
The laburnum tree is silent and quiet. Its leaves are yellowing and seeds fallen. It stands in yellow September light.

The image of the engine has been evoked by the poet in The Laburnum Top to show the stirrings and the sounds and energy that can be seen when the goldfinch enters the thick leaf cover in the laburnum tree and feeds her chicks.

Answer:
The image of the engine has been evoked by the poet in The Laburnum Top to show the stirrings and the sounds and energy that can be seen when the goldfinch enters the thick leaf cover in the laburnum tree and feeds her chicks.

The image of the engine has been evoked by the poet in The Laburnum Top to show the stirrings and the sounds and energy that can be seen when the goldfinch enters the thick leaf cover in the laburnum tree and feeds her chicks.

Answer:
The laburnum tree looks yellow and still in September afternoon sunshine. It bursts into activity and life when the goldfinch arrives. There is plenty of sound and movement in its branches.

A notice about publishing annual magazine:

"Unleash Your Creativity - Be A Part Of Our Potpourri"

Dear students,

Our school's culture committee is going to publish our annual magazine 'Potpourri' next month. This magazine would encapsulate the past achievements of our students, as well as articles, poems, short stories and research based journals written by our brilliant students.

We are giving a open call to all, to bring out their brilliant ideas and creative thoughts in the shape of write-ups.

The write-ups submitted by you should be factually and grammatically correct and must not have any kind of plagiarism. You have to submit your content till 30th June 2019, our screening committee will decide whether it is worth publishing or not.

Aman,

Head Boy,

XYZ International School