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Posted by Sk .Sohail Sohail 5 years, 3 months ago (9368961)
- 3 answers
Posted by Himanshu Parihar 5 years, 3 months ago (9850302)
- 0 answers
Posted by Priyanshi Kashyap 5 years, 3 months ago (9839864)
- 2 answers
Rîtíkã Çhäûhāñ 5 years, 3 months ago (9058028)
Gaurav Seth 5 years, 3 months ago (2898529)
Answer:
g(x) = x² - x + 1
Step-by-step explanation:
On dividing x3-3x2+x+2 by a polynomial g(x),the quotient and remainder were x-2 and -2x+4 respectively.find g(x)
f(x) = x³ - 3x² + x + 2
q(x) = x - 2
let say
g(x) = ax² + bx + c
r = - 2x + 4
f(x) = g(x)q(x) + r
=> x³ - 3x² + x + 2 = (ax² + bx + c)(x - 2) + (-2x + 4)
=> x³ - 3x² + x + 2 = ax³ + x²(b - 2a) + x(c - 2b) -2c -2x + 4
=> x³ - 3x² + x + 2 = ax³ + x²(b - 2a) + x(c - 2b - 2) + (-2c + 4)
Equating Power terms
a = 1
b - 2a = - 3 => b -2 = -3 => b = -1
c - 2b - 2 = 1 => c + 2 - 2 = 1 => c = 1
or -2c + 4 = 2 => -2c = -2 => c = 1
g(x) = x² - x + 1
Posted by Arun Sharma 5 years, 3 months ago (9850292)
- 1 answers
Anya Jain 5 years, 3 months ago (9803048)
Posted by Shaurya Patil 5 years, 3 months ago (9333169)
- 1 answers
Posted by Pavan Kurlekar . 5 years, 3 months ago (9849046)
- 5 answers
Gaurav Seth 5 years, 3 months ago (2898529)
the question has been answered as per class 8
the 4th friction is Fluid friction
Anu Patil 5 years, 3 months ago (8542984)
Gaurav Seth 5 years, 3 months ago (2898529)
Friction is defined as the force that opposes the motion of a solid object over another.
Friction is of 3 types
1)Static friction
2)Sliding friction
3)Rolling friction
Static friction
The maximum fictional force present between any two objects when one object just tends to move or slip over the surface of the other object ,is called static friction.Static friction is a kind of starting fiction because an object just tends to start moving, it does not actually move.
Sliding friction
The frictional force present when one object moves slowly or slides over the surface of another object is known as sliding friction
Rolling friction
When an object rolls over the surface of another object ,the resistance to its motion is called rolling friction.
It is always easier to roll than to slide an object over another object.So rolling friction is much less than the sliding friction.
Posted by Kavita Pawar 5 years, 3 months ago (9841668)
- 2 answers
Gaurav Seth 5 years, 3 months ago (2898529)
Woodpeckers
Woodpeckers have strong beaks which taper to the tip, forming a chisel for pecking holes in trees for food or nests. Most feed on insects which live under the bark.
Posted by Kavita Pawar 5 years, 3 months ago (9841668)
- 5 answers
Gaurav Seth 5 years, 3 months ago (2898529)
Woodpeckers
Woodpeckers have strong beaks which taper to the tip, forming a chisel for pecking holes in trees for food or nests. Most feed on insects which live under the bark.
Posted by Subobh Sharma 5 years, 3 months ago (8489206)
- 3 answers
Gaurav Seth 5 years, 3 months ago (2898529)
◾BULB HAVE TWO TERMINALS,
ONE OF THEM IS NEGATIVE WHILE OTHER IS POSITIVE.
The bulbs have two terminals because, a circuit can be completed only when there are both the positive terminal as well as negative terminal, as the current flow is allowed only when the circuit is complete. Hence, the bulb has two terminals.
Posted by Kavita Pawar 5 years, 3 months ago (9841668)
- 3 answers
Posted by Kavita Pawar 5 years, 3 months ago (9841668)
- 2 answers
Posted by Himakshi Solanki Himakshi Solanki 5 years, 3 months ago (9850115)
- 1 answers
Gaurav Seth 5 years, 3 months ago (2898529)
जब शरीर के किसी हिस्से पर घाव बन जाए और रक्त बहने लगे तो सर्वप्रथम उस स्थान पर साफ़ कपड़े को कसकर बाँध देना चाहिए ताकि रक्त के प्रवाह को रोका जा सके। इस तरह रक्त का प्रवाह तुरन्त रूक जाएगा परन्तु इस तरकीब से भी बात ना बने और रक्त का प्रवाह बना रहे तो तुरन्त ही डाक्टर के पास उपचार के लिए मरीज़ को लेकर जाना चाहिए।
Posted by Ribu'S World 5 years, 3 months ago (9809233)
- 4 answers
Gaurav Seth 5 years, 3 months ago (2898529)
- No medium is required for transfer of heat by radiation.
From the sun the heat comes to us by another process known as radiation. The transfer of heat by radiation does not require any medium. It can take place whether a medium is present or not. When we sit i n front of a room heater, we get heat by this process. A hot utensil kept away from the flame cools down as it transfers heat to the surroundings by radiation. Our body too, gives heat to the surroundings and receives heat from it by radiation.
Posted by Parneet Gill 5 years, 3 months ago (9759285)
- 1 answers
Posted by Kavita Pawar 5 years, 3 months ago (9841668)
- 0 answers
Posted by Kavita Pawar 5 years, 2 months ago (9841668)
- 0 answers
Posted by Manpreet Kaur Priya Vijay 5 years, 3 months ago (9726307)
- 2 answers
Priyanshi Kashyap 5 years, 3 months ago (9839864)
Posted by Vansh Bhiyana 5 years, 3 months ago (9519161)
- 2 answers
Garima Chaubey 5 years, 3 months ago (9540370)
Posted by Kavita Pawar 5 years, 3 months ago (9841668)
- 0 answers
Posted by Jannat Chugh 5 years, 3 months ago (3332592)
- 2 answers
Ayush Kashyap 5 years, 3 months ago (9331396)
Manpreet Kaur Priya Vijay 5 years, 3 months ago (9726307)
Posted by Rakhi Soni Rakhi ? 5 years, 3 months ago (9604767)
- 2 answers
Posted by Kavita Pawar 5 years, 3 months ago (9841668)
- 0 answers
Posted by Rakhi Soni Rakhi ? 5 years, 3 months ago (9604767)
- 0 answers
Posted by Sarabjot Singh 5 years, 3 months ago (3456389)
- 3 answers
Suganya Vis 5 years, 3 months ago (2882233)
Gaurav Seth 5 years, 3 months ago (2898529)
Aluminum hydroxide (Al[OH] 3 ): antacids, deodorants.
Ammonium hydroxide (NH 4 OH): glass cleaner.
Calcium hydroxide (Ca[OH] 2 ): caustic lime, mortar, plaster.
Magnesium hydroxide (Mg[OH] 2 ): laxatives, antacids.
Sodium bicarbonate/sodium hydrogen carbonate (NaHCO 3 ): baking soda.
Posted by Sruti . 5 years, 3 months ago (9336542)
- 1 answers
Gaurav Seth 5 years, 3 months ago (2898529)
Biology creates an awareness of vast array of forms of life which normally goes unseen. Biology offers a large scope and provides a large field for study.
(1) Helps us to understand ourselves better : It unfolds different queries of life alongwith its cultural, social, philosophical and economical aspects. So it helps in understanding the life better.
(2) Biology and inter-relationship of living beings : Study of biology helps us in understanding the wonderful phenomenon and laws of nature which finally tell us to predict the behaviour of different living beings under changed conditions.
(3) Biology and resources : Biology helps us to know how to tap and conserve the resources available to us e.g. fishes, birds, forests etc.
(4) Biology and literature : Knowledge of Natural Biology has greatly enriched the literature with their references in stories and poems etc. Poets and other authors have been inspired by the beautiful and interesting plants and animals and frequently figure them in stories, poems and dramas.
(5) Study of nature is a rewarding experience : Many plants like Narcissus, Dahlia, Gloriosa, Roses, Marigold, Aster, etc. are used for ornamental purposes. The variety available in animals is widely enjoyed in zoological parks. Students enjoy excursions to remote places watching never seen before plants and animals.
(6) Solving problems : Biology makes us to understand the present day problems such as population growth, pollution, conservation of wildlife and survival of man etc. The future directions of biotechnology, conservation of biodiversity, maintenance of environment and human welfare remain in the hands of biologists.
(7) Biology-Medicinal aspect : Several plants like Atropa belladona, Cinchona are sources of atropine, quinine etc. Many members of fungi such as Penicillium and Streptomyces give rise to antibiotics like penicillin and streptomycin. Plants are the major source of vitamins. Drugs are first tested on animals before being used for treating man. Animals provide scientific hints for the production and use of medicines. Animals are widely used for scientific research and results thus obtained are finally applied to man. The study of animal play an important role in health, nutrition and control of pests. Many diseases like malaria are caused and transmitted by animals.
(8) Solving approach of biology : Knowledge for eradication of diseases like malaria, small pox, etc. have been achieved by scientists basically due to desire and determination to solve the problem.
(9) Ecosystem and living organisms : Biology helps us in understanding the various ecosystems. The living community and non-living environment interact with each other and exchange of material in them takes place.
(10) Biotechnology : Biotechnologists have produced many genetically modified (GM) crops. Plenty of studies are being made by geneticists, evolutionists and cytologists to fudge the efficacy of biotechnology.
Posted by Mehvishmanzoor Wani 5 years, 3 months ago (9849629)
- 2 answers
Posted by Kavita Pawar 5 years, 3 months ago (9841668)
- 0 answers
Posted by Kavita Pawar 5 years, 3 months ago (9841668)
- 3 answers
Latika Latwal 5 years, 3 months ago (9851255)
Posted by Kavita Pawar 5 years, 3 months ago (9841668)
- 0 answers
Posted by Vansh Bhiyana 5 years, 3 months ago (9519161)
- 3 answers
Kalpana Rajesh 5 years, 3 months ago (8849433)
Manikanta Manikanta 5 years, 3 months ago (9686841)
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Mansi Mishra 5 years, 3 months ago (4922001)
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