Ask questions, doubts, problems and we will help you..
Ask questions which are clear, concise and easy to understand.
Ask Question
CBSE, JEE, NEET, CUET
Question Bank, Mock Tests, Exam Papers
NCERT Solutions, Sample Papers, Notes, Videos
Posted by Garima Singh 5 years, 4 months ago (8965984)
- 2 answers
Disha Jaiswal 5 years, 4 months ago (9670234)
Posted by Class 12 5 years, 4 months ago (6013175)
- 5 answers
Sehaj Gamer? 5 years, 4 months ago (9443330)
Posted by Sourav Singh 5 years, 4 months ago (2604432)
- 1 answers
Meghna Thapar 5 years, 3 months ago (6237)
Kinetic energy of an object is the energy that it possesses due to its motion. It is defined as the work needed to accelerate a body of a given mass from rest to its stated velocity.
Derivation:
Let us consider an object of m which is at rest lying on a table.
Let A force F acts on the object which moves the object through a distance S.
The workdone=F×S
W=Fnet×S-------(1)
Let the work done on the object causes a change in its velocity from u to V and let a be the acceleration.
From Third equation of motion:
V²−u²=2as
s=V²−u²/2a----------(2)
By Newton's Second law:
F=ma------(3)
From equation (1), (2) and (3)
W=ma×(V2−u2/2a)=(1/2)m(V2−u2)
As we assumed object at rest, u=0
W=(1/2)mV2
we know that the kinetic energy of a body moving with a certain velocity is equal to work done on the object to acquire that velocity from rest.
∴K.E=1/2mV2
Posted by Naveen Vijai 5 years, 4 months ago (9702479)
- 1 answers
Meghna Thapar 5 years, 4 months ago (6237)
Farmers who supplied food to the Harappan cities lived a settled life as they were engaged in farming activities. Farmers and herders mostly depended on agriculture and domestication of animals for their livelihood while as hunter-gathers in chapter 2 depended on hunting of wild animals and plants. Yes the life of the farmers and herders who supplied food to the Harappan cities was different because the farmers and Herders of the Harapans lived away from the cities in which everyone else lived.
Posted by ꧁༒Arjun Meena༒꧂ 5 years, 4 months ago (9719616)
- 4 answers
Posted by Tamana Yadav 5 years, 4 months ago (9708811)
- 2 answers
Pavleen Bagga 5 years, 4 months ago (9682777)
Anjali Rao 5 years, 4 months ago (9719997)
Posted by Prachi Raturi 5 years, 4 months ago (9719634)
- 5 answers
09 Nitika Narayan Singh 6B 5 years, 4 months ago (9688846)
Posted by Shubham Chopra 5 years, 4 months ago (9628210)
- 0 answers
Posted by Ranjan Arora 5 years, 4 months ago (8597831)
- 1 answers
Posted by Diya Dagli Kv G 5 years, 4 months ago (9533341)
- 3 answers
Hriday Tripathi 5 years, 4 months ago (1121819)
Samrat Gurjar 5 years, 4 months ago (5156867)
Posted by Prashant Bansal 5 years, 4 months ago (3722349)
- 0 answers
Posted by Kehar Pundir Pundir 5 years, 4 months ago (7696238)
- 1 answers
Gaurav Seth 5 years, 4 months ago (2898529)
About the author - Vallikannan is pseudonym of R.S Krishnasamy’s. He is an Indian Tamil writer, journalist, critic, translator.
Theme of the story - Through Valli in Madam Rides the Bus, Vallikannan depicts the curious nature of the children. The story also shows that how easily children are fascinated by new things and their curiosity doesn’t end without them experiencing the delights of fantasy life in their life. Just as we see Valli has a desire to go on a bus ride and she manages to go all alone. The experience of her first bus ride has been depicted by Vallikannan in a humorous and rambling way. Through the story, we get to see the world from the perspective of a child.
Posted by Kehar Pundir Pundir 5 years, 4 months ago (7696238)
- 1 answers
Posted by Ujjwal Kumar 5 years, 4 months ago (9717072)
- 3 answers
Gaurav Seth 5 years, 4 months ago (2898529)
Phosphorus has valency 3.
The valence (or valency) of an element is a measure of its combining power with other atoms when it forms chemical compounds or molecules.
In PH3, P is combined to 3 H atoms, so the valency of phosphorous is +3.
Yogita Ingle 5 years, 4 months ago (2577571)
The number of valence electrons or the number of electrons in the outermost shell of phosphorus is 3. - Thus, one atom of phosphorus is capable of combining with three atoms of hydrogen in order to form phosphine (PH3). Therefore, the valency of phosphorus in PH3 is +3.
Posted by Sarandeep Singh 5 years, 4 months ago (9655630)
- 0 answers
Posted by Ãshïsh Jaíñ 5 years, 4 months ago (9715731)
- 3 answers
Sanjana Dua?????❣️ 5 years, 4 months ago (8790599)
Gaurav Seth 5 years, 4 months ago (2898529)
CBSE Topper Answer Sheet Class 12 Chemistry
| Academic Year | Topper Answer Sheet |
| Class 12 Chemistry Topper Answer Sheet 2018 | <a href="https://drive.google.com/uc?export=download&id=1rK7xoVpPVWdldC1TVJ9_XxBDj3Ue5y0m">PDF Download</a> |
| Class 12 Chemistry Topper Answer Sheet 2017 | <a href="https://drive.google.com/uc?export=download&id=1CxGZqD9yRdtmt5AxUPDl7AtT8kEEQwF2">PDF Download</a> |
| Class 12 Chemistry Toppers Answer Sheet 2016 | <a href="https://drive.google.com/uc?export=download&id=1FnLrtKaZesA5erWlcKWyTh4vlyIjPb7_">PDF Download</a> |
| Class 12 Chemistry Toppers Answer Sheet 2014 | <a href="https://drive.google.com/uc?export=download&id=1Ip6_2JZvNZc3WmEOKSmmztu5jetBQ7gF">Download PDF</a> |
Posted by Komal Sureshbhai Yogi Yogi 5 years, 4 months ago (9544717)
- 0 answers
Posted by Mithun G Kumar 5 years, 4 months ago (9719455)
- 1 answers
?? 5 years, 4 months ago (9700857)
Posted by Anjali Tyagi 5 years, 4 months ago (9719504)
- 0 answers
Posted by Bhawana Singh 5 years, 4 months ago (9078303)
- 1 answers
?? 5 years, 4 months ago (9700857)
<a href="https://www.toppr.com/en-in/content/cbse/class-11-commerce/legal-studies/">Visit toppr.com!</a>
Posted by Zoya Fathima 5 years, 4 months ago (9272083)
- 3 answers
Raktim Raktim 5 years, 4 months ago (12342168)
Yogita Ingle 5 years, 4 months ago (2577571)
1) Business persons are able to make a huge profits in the market as they buy the products from the producer at low prices and sell. them at very high prices .as a result the producer such as the farmer suffers a loss. As we know that the traders are the rich and the powerful in the market also the business persons employee people at the lowest rates possible to make profits.
Posted by Rohitha S 5 years, 4 months ago (9440532)
- 1 answers
Gaurav Seth 5 years, 4 months ago (2898529)
In the clear sky means when there are no clouds, a kite will look bright in it. It will be clearly noticeable.The kite hurls and with every wag its tail produces a cracking sound. Then, while flying ,all of a sudden, the kite goes high on the top just like a ship goes up and down on the crest of waves with a sail cloth. It moves forward when the wind is strong. But as the wind falls,it seems as if it is also taking a rest for a while in the air. Sometimes, the thread tied to the kite loosen, the flier tries to roll the thread and runs till a new breeze(air) fills its wings.
A kite really looks bright on a clear sky. But when it gets struck on a tree top, it gets torn and gives a poor look.
Posted by Ziya Ilyas Ziya Ilyas 5 years, 4 months ago (9719098)
- 0 answers
Posted by Vaishali Singh 5 years, 4 months ago (9652017)
- 1 answers
Yogita Ingle 5 years, 4 months ago (2577571)
The length of the muscle cell is 1-40 micrometers.
Nerve cells possess a cell body and one to many thin, fiber-like axons.
Some nerve cells possess axons as long as 1 meter.
Posted by Vaishali Singh 5 years, 4 months ago (9652017)
- 2 answers
Gaurav Seth 5 years, 4 months ago (2898529)
Red blood cells are not considered to be prokaryotic, because they are part of an eukaryotic organism. Red blood cells begin life with the full complement of organelles, including a nucleus and mitochondria, but RBCs in humans shed their organelles during maturation. In actuality, though, only mammalian RBCs lack nuclei; RBCs in other animals still hold on to their traditional eukaryotic characteristics.
Yogita Ingle 5 years, 4 months ago (2577571)
Red blood cells are not considered to be prokaryotic, because they are part of an eukaryotic organism. Red blood cells begin life with the full complement of organelles, including a nucleus and mitochondria, but RBCs in humans shed their organelles during maturation. In actuality, though, only mammalian RBCs lack nuclei; RBCs in other animals still hold on to their traditional eukaryotic characteristics.
myCBSEguide
Trusted by 1 Crore+ Students
Test Generator
Create papers online. It's FREE.
CUET Mock Tests
75,000+ questions to practice only on myCBSEguide app
Sarit Kumar 5 years, 4 months ago (4281456)
1 Thank You