The Principal

Greenwoods Global School

City

May 14, 2018

Subject: Request for postponing examination

Sir:

Respectfully I wish to state that my brother’s wedding ceremony is to be solemnized on May 20, 2018 in Gurugram. My physics exam date clashes with the wedding date. Since it is just a terminal exam, could you please postpone my exam to some other date after May 21, 2018. I shall be exceedingly grateful for this favor. I have been topper in all my exams ever since I have joined the school. I hope you will take the decision in my favor.

Thanking you.

Yours faithfully,

Amrita

XI Non-Medical

Roll no. 5

Administration of AAHPER motor Fitness Test:- The test is administered on school student of around 17 years of age. It includes.

(a) Pull up for boys

(b) Sit-up

(c) Shuttle run

(d) Standing long jump

(e) 50 mts. dash

(f) 600 Years run/walk

Detailed Answer :

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.

शांतनु महाभारत के एक प्रमुख पात्र हैं। वे हस्तिनापुर के महाराज प्रतीप के पुत्र थे। उनका विवाह गंगा से हुआ था। देवी गंगा ने इनके 7 पुत्रो को जन्म लेते ही अपने जल मे बहा दिया क्यों की वो श्राप से ग्रसित थे इस घटना से आहत हो कर इन्होंने गंगा को दिया वचन तोड़ दिया जिससे गंगा इन्हे छोड़ गयी जिससे उनका देवव्रत नाम का पुत्र हुआ। यही देवव्रत आगे चलकर महाभारत के प्रमुख पात्र भीष्म के नाम से जाने गए।

1. Represent these numbers on the number line.

(i) 7/4

(ii) -5/6

Solution:

(i) 7/4

Divide the line between the whole numbers into 4 parts. i.e., divide the line between 0 and 1 to 4 parts, 1 and 2 to 4 parts and so on.

Thus, the rational number 7/4 lies at a distance of 7 points away from 0 towards positive number line.

(ii) -5/6

Divide the line between the integers into 4 parts. i.e., divide the line between 0 and -1 to 6 parts, -1 and -2 to 6 parts and so on. Here since the numerator is less than denominator, dividing 0 to – 1 into 6 part is sufficient.

Thus, the rational number -5/6 lies at a distance of 5 points, away from 0, towards negative number line

fOR MORE CLICK

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Mid-Oceanic Ridges:

i. A mid-oceanic ridge is composed of two chains of mountains separated by a large depression.

ii. The mountain ranges can have peaks as high as 2,500 m and some even reach above the ocean’s surface.

iii. Iceland, a part of the mid - Atlantic Ridge, is an example.

AgCl and AgBr are the two salts that are used in black and white photography.

An electric cell is used to operate things such as the clocks, calculators, phones, etc. It is a small source of energy. It is also known as a pencil cell or dry cell. It converts chemical energy into electrical energy. A dry cell is a primary cell that is non-rechargeable and thus cannot be reused. These cells are used in a number of household gadgets like a radio, a transistor, a tape-recorder, a calculator, etc.

Construction

• It consists of a zinc container with a small brass cap on one side of the cell which is labelled as positive (+) and a metal base at the other side of the cell which is labeled as negative (-).
• The positive and negative sides of the cells are called as positive terminal and negative terminal of the cell respectively.
• A carbon rod is placed at the centre of the cell surrounded by a mixture of manganese dioxide (MnO₂) and charcoal (C) in a muslin bag.
• The electrolyte is a moist paste of ammonium chloride (NH₄CI), plaster of paris, flour, etc. and the outer body (except for the base) of a zinc container is insulated with a thick cardboard or plastic material.

Working

• When the cell is connected to a bulb, the chemical reaction inside the cell becomes fast and the current starts flowing through the bulb. Hence, the bulb glows.
• These dry cells are a small source of electricity.

Note:The dry cells actually are not dry. In fact, it works as long as the paste inside it remains moist. The presence of water (or moisture) helps in the movement of the ions within the cell from one electrode to the other.

Work is the product of the component of the force in the direction of the displacement and the magnitude of this displacement.

Mathematically, the above statement is expressed as follows:

W = (F cos θ) d = F. d

Where,

• W is the work done by the force.
• F is the force, d is the displacement caused by the force
• θ is the angle between the force vector and the displacement vector

The dimension of work is the same as that of energy and is given as, [ML²T^–2].

The cellular components are called cell organelles. These cell organelles include both membrane and non-membrane bound organelles, present within the cells and are distinct in their structures and functions. They coordinate and function efficiently for the normal functioning of the cell. A few of them function by providing shape and support, whereas some are involved in the locomotion and reproduction of a cell. 

Oliver Lutkins was the hack driver. He impressed the narrator by his simplicity and pleasant appearance. He introduced himself as Bill. The hack driver made a complete fool of the narrator by taking him to all the places where he could find Lutkins but every time missed him by a fraction of minutes. He had a good understanding with his town folks who helped him in befooling the lawyer.

Politically, our Constitution has been reasonably effective. The government of our country is carried out under the provisions of the Constitution with a democratically elected government that is responsible to Parliament. The judiciary has also been effective in preserving the basic character of the constitution by refusing the legislature or the executive to exceed its authority. However, our political system is still marred by evils of criminalization and corruption which goes against the spirit of the Constitution.

In this triple bond is present between carbon atoms (C  C  bond).The hybridisation is sp and the general formula involved is C_nH_2n -2.

•  The lowest member of alkynes is: simplest compound that is CH  CH (ethyne).
• The common name of it is acetylene.
• It has high Bond dissociation energy, as there is triple bond present therefore the energy is high of the order 823 KJ/mol.
• Due to this reason the acetylene is mixed with O₂ and the flame is used for welding purpose.

The structure of the alcohol functional group is R−OH. Aldehyde is the functional group in which one alkyl group is bonded to the carbonyl atom. The structure of the aldehyde functional group is –CHO.

4x+6=-10

4x = - 10 - 6

4x = -16

x = -16/4

x = -4

-3+2x=11

2x = 11 + 3

2x = 14

x = 14/2

x = 7

Let R be the radius of semi-circular path as shown in figure.

Displacement in semi circular path = 2R

distance covered in semi circular path = πR

ratio of distance covered to displacement = π/2

Social advertisements are the advertisements made by the State or private agencies. They have a larger message for the society. For example advertisement regarding building of toilets in each home to ensure health and sanitation of the people is a social advertisement. Advertisement giving simple steps for preventing dengue is also a social advertisement.

speed of thief = 12 + 60 km/hr = 72 km/hr
speed of police = 80 km/hr
speed of thief w.r.t police = 72-80 km/hr = -8km/hr