Ask questions which are clear, concise and easy to understand.
Ask QuestionPosted by Clash With Gopal 4 years, 3 months ago
- 3 answers
Posted by Javed Ahmad 4 years, 3 months ago
- 1 answers
Yogita Ingle 4 years, 3 months ago
It is caused by the Wuchereria bancrofti worms, Brugia malayi and Brugia timori. These worms affect the lymphatic system especially the lymph nodes. Chronic cases of lymphatic filariasis lead to the disease Elephantiasis.
Posted by Javed Ahmad 4 years, 3 months ago
- 2 answers
Yogita Ingle 4 years, 3 months ago
Helium has two electrons in its energy shell, while argon and neon have 8 electrons in their valence shells. As these have maximum number of electrons in their valence shells, they do not have any tendency to combine with other elements. Hence, they have a valency equal to zero.
Anoushka Raj 4 years, 3 months ago
Posted by Suhani Pancharas 4 years, 3 months ago
- 2 answers
Shrishti Mehta 4 years, 3 months ago
Yogita Ingle 4 years, 3 months ago
Uniform acceleration is change of equal velocity in equal intervals of time. Non Uniform acceleration is change of non-equal velocity in equal intervals of time.
Posted by Tarini Sahu 4 years, 3 months ago
- 1 answers
Gaurav Seth 4 years, 3 months ago
The cell is the structural and functional unit of all known living organisms. It is the smallest unit of an organism that is classified as living, and is sometimes called the building block of life. It is the unit of living things though in higher organisms cells differentiate into different types specialising in different functions. So, the entire functioning of the living organisms begins from the basic unit called cell. Hence, cell is called the fundamental unit of life.
Posted by Supreet Samal 4 years, 3 months ago
- 1 answers
Shrishti Mehta 4 years, 3 months ago
Posted by Vinay Sisodia 4 years, 3 months ago
- 1 answers
Gaurav Seth 4 years, 3 months ago
Abdul, while driving to school, computes the average speed for his trip to be 20 km h-1. On his return trip along the same route, there is less traffic and the average speed is 30 km h-1. What is the average speed for Abdul’s trip?
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Posted by Varun Sharma 4 years, 3 months ago
- 4 answers
The Soultaker?♂️?♂️ 4 years, 3 months ago
Javed Ahmad 4 years, 3 months ago
Varun Sharma 4 years, 3 months ago
Posted by #Ķáŕáń J@@Ť? 4 years, 3 months ago
- 2 answers
Gaurav Seth 4 years, 3 months ago
Graphical Representation of motion has the following advantages:
1. It makes it easy to represent and interpret data in an efficient way
2. information can be compared in terms of graphical representation.Such a comparative analysis helps for quick understanding and attention.
Let us look at some important graphs on motion/
Displacement-Time Graph
In the displacement-time graph, the time is taken on X-axis and the displacement of body is taken on Y-axis. From this graph, we can determine the velocity of body. Since, velocity is the displacement per unit time therefore the slope of displacement-time graph gives the velocity.
In the velocity-time graph, time is taken on X-axis and the velocity is taken on Y-axis. Since velocity is a vector quantity, the negative velocity means that the negative velocity means that the body is moving in opposite direction from that of the positive velocity whereas in positive velocity the body is moving in a certain direction away from its initial position
In the acceleration - time graph, time is taken on X-axis and acceleration is taken on Y-axis. From this graph, we can find the change in the speed of a moving object in a certain interval of time.
So, these are the various uses of graphs in representing the various equations and states of motion. This clearly explains the importance of graphical representation of motion.
Posted by #Ķáŕáń J@@Ť? 4 years, 3 months ago
- 2 answers
Gaurav Seth 4 years, 3 months ago
Total distance covered by Usha in 1 min = 180 m.
Displacement of Usha in 1 min = 0
Posted by #Ķáŕáń J@@Ť? 4 years, 3 months ago
- 1 answers
Gaurav Seth 4 years, 3 months ago
Given,
Length of the track = 200 m
Expected rounds athlete are supposed to take = 4
(a) Total distance covered by each athlete = 4 × 200 = 800 m.
(b) As the line of finish is the same as the line of start, so displacement of each athlete = 0.
(c) Motion of the athletes is non-uniform as the speed of the athlete will be changing at each point.
(d) From parts (a) and (b), the distance and displacement of an athlete are not equal at the end of the race.
Posted by #Ķáŕáń J@@Ť? 4 years, 3 months ago
- 1 answers
Gaurav Seth 4 years, 3 months ago
Scalar quantities: Temperature, mass, volume, speed, time, distance, electric charge, density, work and energy.
Vector quantities: Displacement, velocity, acceleration, force, momentum and weight.
Posted by Parikshit Pasare 4 years, 3 months ago
- 1 answers
Yogita Ingle 4 years, 3 months ago
|
Organ |
Organelle |
|
Organs are present in the entire body. |
Organelles are present inside the cell. |
|
They are large in size. |
They are microscopic. |
|
They perform functions for the entire body. |
They perform functions for the cell itself. |
|
Examples: Stomach, Kidney. |
Examples: Mitochondria, Nucleus. |
Posted by Harsh Rajput 4 years, 3 months ago
- 2 answers
Akshat Holland Minettee 4 years, 3 months ago
Yogita Ingle 4 years, 3 months ago
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Intermolecular forces are the forces that act between molecules.
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The type of intermolecular force in a substance, will depend on the nature of the molecules.
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There are five types of intermolecular forces: ion-dipole forces, ion-induced-dipole forces, dipole-dipole forces, dipole-induced dipole forces and induced dipole forces.
Posted by Parikshit Pasare 4 years, 3 months ago
- 1 answers
Yogita Ingle 4 years, 3 months ago
| Osmosis | Diffusion |
| It is limited only to the liquid medium. | Occurs in all mediums – Solid, Liquid and gas. |
| Requires a semipermeable membrane. | Do not require a semipermeable membrane. |
| Depends on the number of solute particles dissolved in the solvent. | Depends on the presence of other particles. |
| Requires water for the movement of particles. | Do not require water for the movement of particles. |
| Only the solvent molecules can diffuse. | Both the molecules of solute and solvent can diffuse. |
| The flow of particles occurs only in one direction. | The flow of particles occurs in all the directions. |
| The entire process can either be stopped or reversed by applying additional pressure on the solution side. | This process can neither be stopped nor reversed. |
Posted by Arun Yadav 4 years, 3 months ago
- 2 answers
Rajat Singh 4 years, 3 months ago
Gaurav Seth 4 years, 3 months ago
- a person who writes descriptions of historical events as they happen.
- a person who writes accounts of important or historical events.
- someone who writes chronicles. historian, historiographer - a person who is an authority on history and who studies it and writes about it
Posted by Rahul M 4 years, 3 months ago
- 3 answers
Harsh Rajput 4 years, 3 months ago
Gaurav Seth 4 years, 3 months ago
The permanent tissues are formed by the differentiated cells, which become specialised to perform specific functions like protection, support, storage and conduction. The permanent tissues always differentiate from the meristematic cells,
Rajat Singh 4 years, 3 months ago
Posted by Piyush Doneriya 4 years, 3 months ago
- 1 answers
Meghna Thapar 4 years, 2 months ago
Traditionally, humans have manipulated genomes indirectly by controlling breeding and selecting offspring with desired traits. Genetic engineering involves the direct manipulation of one or more genes. Most often, a gene from another species is added to an organism's genome to give it the desired phenotype. There are three main methods of genetic engineering which are the plasmid method, the vector method, and the biolistic method. This method is the most commonly used method in genetic engineering. This method uses small circular pieces of a DNA molecule called plasmids.
Posted by M M 4 years, 3 months ago
- 1 answers
Yogita Ingle 4 years, 3 months ago
Heavy water consists of deuterium instead of hydrogen . Deuterium atom consists one proton and one neutron. Hence, there are total 10 neutrons in a heavy water molecule (2 from deuterium and 8 from oxygen).
Number of heavy water molecules = 10/20 {tex}{{N}{A}}{/tex} = {tex}0.5 {{N}{A}}{/tex}
Mass of neutrons present in 0.5 mol of heavy water = {tex}10/{{N}{A}} x 5 {{N}{A}} = 5 g{/tex}
Posted by Shivaan Shivaan 4 years, 3 months ago
- 1 answers
Rishav Thakuria 4 years, 3 months ago
Posted by Thumati Saipoojitha 4 years, 3 months ago
- 1 answers
Posted by Parnali Paul 4 years, 3 months ago
- 1 answers
Gaurav Seth 4 years, 3 months ago
m1 = 2kg, u1 = 10m/s, v1 = 1m/s
m2 = 5kg, u2 = 0m/s, v2 = ?
we know that-
m1u1 + m2u2 = m1v1 + m2v2
(2*10) + (5*0) = (2*1) + (5v2)
20 + 0 = 2 + 5v2
18 = 5v2
18 / 5 = v2
3.6 = v2
therefore, the velocity of the second body is 3.6 m/s
Posted by Ranjan Mishra 4 years, 3 months ago
- 2 answers
#Ķáŕáń J@@Ť? 4 years, 3 months ago
Samit Prasad 4 years, 3 months ago
Posted by Ranjan Mishra 4 years, 3 months ago
- 2 answers
Posted by Tahura Tahura 4 years, 3 months ago
- 1 answers
Aarti Balu 4 years, 3 months ago
Posted by Akhil Dalal 4 years, 3 months ago
- 1 answers
Gaurav Seth 4 years, 3 months ago
The fluid mosaic model was proposed by S.J. Singer and Garth L. Nicolson. This model explains the structure of the plasma membrane of animal cells as a mosaic of components such as phospholipids, proteins, cholesterol, and carbohydrates. These components give a fluid character to the membranes.
Posted by Rajesh Singh 4 years, 3 months ago
- 5 answers
Insha Fatima 4 years, 3 months ago
Rated Vlogs 4 years, 3 months ago
Gaurav Seth 4 years, 3 months ago
The Cell Theory is one of the basic principles of biology proposed by the scientists Theodor Schwann, Matthias Schleiden, and Rudolph Virchow.
It states that
i) All living organisms are composed of cells.
ii) The cell is the basic unit of life.
Cells arise from pre-existing cells.
Yogita Ingle 4 years, 3 months ago
Mathias Schleiden and Theodor Schwann in 1838 postulated Cell Theory.
The Cell Theory states that:
- All living organisms are formed of one or more cells.
- New cells arise from pre-existing cells by cell division.
- Cell is the fundamental unit of structure and function in living organism.
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Kartikeya Srivastav 4 years, 2 months ago
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