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Thu September 18, 2014  

Ans: P r i m e space f a c t o r i z a t i o n space o f space 529 space i s comma space 529 space equals space 23 space cross times space 23  square root of 529 equals square root of 23 cross times 23 end root space equals space 23

Thu September 18, 2014  

Ans: The National Assembly, under the leadership of Abbe Sieyes and Mirabeau, had resolved to draft a Constitution for France which would effectively limit the powers of the monarch. These powers, instead of being concentrated in the hands of one person, were now separated and assigned to different political institutions - the legislature, executive and judiciary. The monarchy was retained, but the king did not enjoy absolute power and authority, as he did in the days of pre-revolution France. Therefore, through the new Constitution, the leadership of the Third Estate transformed France into a constitutional monarchy.

Thu September 18, 2014  

Ans: A s space p e r space g i v e n space s t a t e m e n t  D i v i d e n d space equals space D i v i s o r space cross times space Q u o t i e n t space plus thin space R e m a i n d e r  n equals 9 cross times Q u o t i e n t space plus thin space 7 M u l t i p l y space b y space 3 space o n space b o t h space s i d e s comma space w e space g e t  3 n space equals space 9 cross times N e w space Q u o t i e n t space plus thin space 21 space open square brackets N e w space Q u o t i e n t space equals space 3 space cross times space Q u o t i e n t close square brackets  3 n minus 1 equals 9 cross times N e w space Q u o t i e n t space plus thin space 21 minus 1 equals 9 cross times N e w space Q u o t i e n t space plus thin space 20  W e space c a n space e x p r e s s space 20 space a s  20 space equals space 9 space cross times space 2 space plus thin space 2  S o space w h e n space 3 n minus 1 space i s space d i v i d e d space b y space 9 comma space r e m a i n d e r space i s space 2

Thu September 18, 2014  

Ans: U sin g space E u c l i d space L e m m a space T h e o r e m  850 space equals space 680 cross times 1 space plus space 170  680 space equals space 170 cross times 4 space plus space 0  S o space m a x i m u m space c a p a c i t y space o f space c o n t a i n e r space w h i c h space c a n space m e a s u r e space t h e space p e t r o l space o f space e i t h e r space tan k e r space i n space e x a c t space n u m b e r space o f space t i m e s space i s space 170

Thu September 18, 2014  

Ans: Henry Slater knows that the sisters Mrs. Slater (his own wife) and Mrs. Jordan are greedy and materialistic. They feigned love for their aging father, but all they wanted was his money. Both the sisters often bickered about getting a share of their father’s belongings. Henry’s wife unabashedly stole her father’s new slippers and presented them to her husband. In order to sarcastically comment on the sisters’ greed, Henry stated, “I suppose it is all in the family.” 

Thu September 18, 2014  

Ans: Hi srevarssini@gmail.com, The answer to the query that you have posted can be found in the NCERT- PART II text book for class XII. Kindly refer to page numbers 424 and 425 for your answer.It explains all the details needed for your query”

Thu September 18, 2014  

Ans:   One day Helen Keller happened to spill water on her apron. She innocently spread it out to dry before the fire. The apron didn’t dry quickly much to Helen’s annoyance and she kept inching towards the fire. The fire suddenly blazed out and it encircled her. Her clothes caught fire and she screamed in terror. Her old nurse Viny came to her rescue. She threw a blanket over Helen and smothered the fire. Luckily for Helen, only her hands and hair were burnt by the fire. One day at Cape Cod, Miss Sullivan introduced Helen Keller to a horseshoe crab. Helen was extremely amused by the experience and was determined to make the crab her pet. So fascinated was she by the creature that she dragged it for half-a-mile singlehandedly with all her might. She made provision for the crab in a trough inside a well. She was convince that the crab will be safe there. Much to Helen’s disappointment, the crab was nowhere to be seen the next day. Although she was upset at first, Helen realized that it wasn’t a very wise thing to take the creature away from its element. The thought that it may have returned to the sea gave her a sense of happiness.

Thu September 18, 2014  

Ans: You can draw the outline of the lungs and the tubular part that runs from nose to lungs. Then you can draw bronchioles, alveoli. Label them. Give proper texture of trachea in the diagram. Below lungs, draw the diaphragm. Once the entire diagram is ready, label all the parts.

Thu September 18, 2014  

Ans: Plant Hormones: Plant hormones control some aspects of the growth of plants such as cell division, cell enlargement and cell differentiation. Phytohormones Description 1. Auxins Promote growth of plants. They are secreted by the cells present at the tip of stems and roots. Therefore, auxins control the phototropic and geotropic movements of plants. Auxins accelerate growth of stems but reduce the growth in roots. Synthetic auxins are used in horticulture. 2. Gibberellins Promote cell differentiation in the presence of auxins. They break seed dormancy. They also break dormancy in buds. Stimulate elongation of shoots. 3. Cytokinins Promote cell division in plants. Delay ageing of leaves. Promote opening of stomata. Promote fruit growth. 4. Abscisic Acid Acts as a growth inhibitor. It promotes dormancy in seeds and buds. Promotes closing of stomata. Promotes abscission, i.e. wilting and falling of leaves. Detachment of flowers and fruits from the plants is due to abscisic acid.     Hormones in Animals: They are secreted by different endocrine glands.   Hormones Functions Disorders 1. Adrenaline Produced by the adrenal glands. Adrenaline prepares the body for the fight and flight mechanism. When excited or in anger, the adrenal glands produce a lot of adrenaline. It speeds up heart beat and breathing. It raises the blood pressure. Blood supply to the digestive system and skin is reduced, and the blood supply to the skeletal muscles is increased.   2. Thyroxine Secreted by the thyroid gland. Regulates carbohydrate, protein and fat metabolism. It increases the basal metabolic rate (BMR). It regulates body growth such as ossification of bones and mental development. Simple goitre: It is caused by iodine deficiency. Iodine is necessary for the synthesis of thyroxine. In this disorder, the gland is enlarged which is prominent due to swelling in the neck. 3. Growth Hormone (Somatotropin) Secreted by the anterior lobe of the pituitary gland. It is essential for normal growth. Dwarfism: Due to the deficiency of growth hormone. The growth of bones and other body organs is slow. Gigantism: Due to the oversecretion of growth hormone. The bones grow long. Such a person giants up to 2.7 metre in height. 4. Insulin Secreted by pancreas Regulates the blood glucose (sugar) level. Diabetes Mellitus Symptoms: High concentration of sugar in blood (hyperglycemia). Excretes large amount of urine containing more concentration of sugar. A person feels thirsty due to constant loss of water through urination. The person loses weight and becomes weaker. Sometimes, the person may lose vision. Treatment: It cannot be cured, but sugar levels can be maintained by the administration of insulin. 5. Testosterone Secreted by the testes in males. Controls the development of sex organs in males. Controls the development of secondary sexual characters during puberty.   6. Oestrogen Secreted by the ovaries in females. Controls the development of female sex organs. Controls the development of secondary sexual characters during puberty in females.      

Thu September 18, 2014  

Ans: The highly organised plants contain conducting tissues like xylem and phloem. Xylem transports water and minerals from roots to aerial parts of the plant whereas phloem transport food from leaves to other parts of the plant.

Thu September 18, 2014  

Ans: Nerve impulses are carried to different parts of the body by the spinal nerves. Spinal nerves receive these signals from the brain via spinal cord. Nerve impulses to and from different parts of the body below the part of the injury of the spinal cord will not travel to the brain. As a result, the body will be paralyzed depending on site the injury of the spinal cord. Hence all the reflexes below the site of injury will either not work normally or stop.

Thu September 18, 2014  

Ans: Pancreas is an endocrine gland that produces hormones like insulin, glucagon that control blood sugar levels and it is also a digestive organ secreting pancreatic juice that contain digestive enzymes that help in digestion in small intestine.

Wed September 17, 2014  

Ans: Thank You for your appreciation.    Topper Learninng Team

Wed September 17, 2014  

Ans: When appliances of power  P 1 , P 2 , P 3 … P n  are connected  in series with a voltage source, the effective power consumed P effective  is given by:    Syntax error from line 1 column 49 to line 1 column 73. Unexpected '<mstyle '. For example: Consider the following electric circuit in which the electric bulbs of power rating 60W each are connected in series with the voltage source 220 V.   Here the bulbs are connected in series. The effective power consumed is:     Syntax error from line 1 column 49 to line 1 column 73. Unexpected '<mstyle '. In series connections bulbs share the power.Therefore each bulb will light up with power = 20 W. Total power used = 20×3 =60 W

Wed September 17, 2014  

Ans: If b=9, a=9q+r, then we need to give the solutions of all the cases for r=9  Every number which is divisible by 9 is also divisible by 3 and hence 3 is used. 

Wed September 17, 2014  

Ans: Draw a number line ( l ) and mark the points O, A, B and C such that OA = AB = BC = 1 Draw CD ⊥  l,  such that CD = 1 units.
Join OC
In right ΔOCD,
OD 2 = OC 2 + CD 2 OD 2  = 9 + 1 = 10 OD = square root of 10

Taking O as centre and D as radius, draw an arc which cuts  l  in F

Now, draw EF ⊥  l,  such that EF = 1 units
Join OE'
In right ΔOEF,
OE 2 = OF 2 + EF 2 OE = square root of 11

Taking O as centre and OE as radius, draw an arc which cuts  l  in H

Now, draw GH ⊥  l , such that GH = 1 units
Join OG
In right ΔOGH, OG 2  = OH 2  + GH 2 OG = square root of 12
Taking O as centre and OG as radius, draw an arc which cuts  l  in J.

Now, draw IJ ⊥  l , such that IJ = 1 units
Join OI,
In right ΔOIJ, OI 2  = OJ 2  + JI 2 OI = square root of 13= OL
Taking O as centre and OI as radius, draw an arc which cuts  l  in L.

The point L represents square root of 13on the number line.

Wed September 17, 2014  

Ans: Dear narayan.cholkar@raymond.in

Thanks for asking us a question in Ask the Expert section of TopperLearning.com.   We can provide only the solutions.
Please buy/get RD Sharma, if you want to solve it.

Regards

Topperlearning Team.

Wed September 17, 2014  

Ans:

Wed September 17, 2014  

Ans: U sin g space p r o p o r t i o n a l i t y space t h e o r e m. space W e space k n o w space t h a t  fraction numerator A P over denominator P B end fraction equals fraction numerator A Q over denominator Q C end fraction equals fraction numerator P Q over denominator B C end fraction  fraction numerator A P over denominator P B end fraction equals fraction numerator 3.5 over denominator 7 end fraction equals 1 half equals fraction numerator A Q over denominator Q C end fraction equals fraction numerator P Q over denominator B C end fraction  rightwards double arrow fraction numerator P Q over denominator B C end fraction equals 1 half  B C equals 2 space P Q space equals space 2 space cross times space 4.5 equals 9 space c m

Wed September 17, 2014  

Ans: 1. The time period of swing of the pendulum will remain unchanged only till the position of centre of gravity of the bob (left after melting the ice) remains at a fixed distance from the point of suspension. If the centre of gravity of the ice bob is raised upwards after melting, then the effective length of the pendulum decreases. Thus, the time period of the pendulum also decreases. If the centre of gravity of ice bob shifts downwards after melting, then the effective length of the pendulum increases. Thus the time period of the pendulum also increases.    2. The time period of a simple pendulum is given by Syntax error from line 1 column 49 to line 1 column 73. Unexpected '<mstyle '. Where, l is the length of the pendulum from the point from suspension and g is the acceleration due to gravity. When the pendulum is taken to the Moon, the value of ‘g’ decreases and the time period increases. Thus, the pendulum takes more time to complete one vibration. Since the time period increases the speed of oscillation of the pendulum also decreases.     NOTE: Please ask other question as a separate query.
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