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Ask QuestionPosted by Aparna Singh 5 years, 7 months ago
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Posted by Vansh Sharma 5 years, 7 months ago
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Yogita Ingle 5 years, 7 months ago
Division of Labour means that the main process of production is split up into many simple parts and each part is taken by different workers who are specialised in the production of that specific part.
Posted by Devanshu Ladwal 5 years, 7 months ago
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Yogita Ingle 5 years, 7 months ago
Because of great force of attraction particles of solids are closely packed together. This makes the space between particles of solids almost negligible. The lowest kinetic energy of particles does not able to move the particles of solids.
Hence, the great force of attraction and least space between particles of solids and lowest kinetic energy of particles keep the particles at fixed places. Because of the combination of these characters matter exists in solid state.
Posted by Mohith Cp 5 years, 7 months ago
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Yogita Ingle 5 years, 7 months ago
When zinc plate is dipped copper sulphate solution,zinc sulphate is formed and copper is deposited on zinc strip. This reaction shows that zinc is more reactive than copper as it displaces copper from its solution and zinc passes into solution as zinc ions and zinc sulphate solution is formed
Posted by Mohith Cp 5 years, 7 months ago
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Yogita Ingle 5 years, 7 months ago
- Inertia is the natural tendency of an object to resist a change in its state of motion or of rest.
- The mass of an object is a measure of its inertia.
- A force that is just enough to cause a small cart to pick up a large velocity will produce a negligible change in the motion of a train, because of train’s large inertia.
Posted by Shivansh Raj 5 years, 7 months ago
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Sameer Verma 5 years, 7 months ago
Yogita Ingle 5 years, 7 months ago
The meaning of velocity of an object can be defined as the rate of change of the object’s position with respect to a frame of reference and time.
It is a vector quantity, which means we need both magnitude (speed) and direction to define velocity. The SI unit of it is meter per second (ms-1) if there is a change in magnitude or the direction in the velocity of a body the body is said to be accelerating.
Posted by Mohith Cp 5 years, 7 months ago
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Posted by Anant Kumar Singh 5 years, 7 months ago
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Meghna Thapar 5 years, 7 months ago
According to the law of conservation of momentum, the sum of momenta of two objects before collision is equal to the sum of momenta after collision, provided there is no external unbalanced force acting on the objects.
Suppose two balls A and B, of masses mA and mB are travelling in the same direction along a straight line at different velocities uA and uB. And there are no other external unbalanced forces acting on them. Let uA > uB and the two balls collide with each other. During collision which lasts for a time t, the ball A exerts a force FAB on ball B and the ball B exerts a force FBA on ball A.
Suppose vA and vB are the velocities of the two balls A and B after the collision, respectively.
The momenta of ball A before and after the collision are mA uA and mA vA. The rate of change of its momentum (or FAB, action) during the collision will be
mA (vA - uA)/t
Similarly, the rate of change of momentum of ball B (= FBA or reaction) during the collision will be
mB (vB - uB)/t.
According to the third law of motion, the force FAB exerted by ball A on ball B (action) and the force FBA exerted by the ball B on ball A (reaction) must be equal and opposite to each other. Therefore,
FAB = – FBA
or
mA (vA - uA)/t = -mB (vB - uB)/t. This gives,
mA uA + mB uB = mA uA + mB vB
where mA and mB are masses of the bodies, u1 and u2 are initial velocities of the bodies and v1 and v2 are final velocities of the bodies.
Posted by Harshit Srivastav 5 years, 7 months ago
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Posted by Aman Parmar 5 years, 7 months ago
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Sameer Verma 5 years, 7 months ago
Bajendra Narayan Sahoo 5 years, 7 months ago
Kumar Adarsh 5 years, 7 months ago
Harsh Kumar 5 years, 7 months ago
Harsh Kumar 5 years, 7 months ago
Posted by Anurag Maurya 5 years, 7 months ago
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Posted by Sanket 5 years, 7 months ago
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Harshit Srivastav 5 years, 7 months ago
Harshit Srivastav 5 years, 7 months ago
Posted by Shubham Rathi 5 years, 7 months ago
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Harshit Srivastav 5 years, 7 months ago
Posted by Palak Burman 5 years, 7 months ago
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Meghna Thapar 5 years, 7 months ago
A nucleus is a membrane-bound organelle that houses the genetic material of eukaryotes in DNA. The nucleus consists of protein fibres or the DNA inside chromatin fibres. Nucleoids contain the genetic material of prokaryotes in the cytoplasm.
Posted by Palak Burman 5 years, 7 months ago
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Krishna Shashwat 5 years, 7 months ago
Posted by Palak Burman 5 years, 7 months ago
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Meghna Thapar 5 years, 7 months ago
When we wash clothes, our hands are exposed to water for a long time. Our hands behave as hypertonic solution and the outside of our hands behave as hypotonic solution. Hence, water flows from high concentration to low concentration. The water is not entering your hands, it actually leaves them and hence, they shrink.
Posted by Palak Burman 5 years, 7 months ago
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Meghna Thapar 5 years, 7 months ago
The substances like CO2 and water move in and out of a cell by diffusion from the region of high concentration to low concentration. When the concentration of CO2 and water is higher in external environment than that inside the cell, CO2 and water moves inside the cell.
Posted by Samruddhi Br 5 years, 7 months ago
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Posted by Bajendra Narayan Sahoo 5 years, 7 months ago
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Meghna Thapar 5 years, 7 months ago
Human reproduction is any form of sexual reproduction resulting in human fertilization. It typically involves sexual intercourse between a man and a woman. During sexual intercourse, the interaction between the male and female reproductive systems results in fertilization of the woman's ovum by the man's sperm.
Posted by Pragya Pathak 5 years, 7 months ago
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Posted by Rachana Sonicha 5 years, 7 months ago
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Yogita Ingle 5 years, 7 months ago
The substances like CO2 and water move in and out of a cell by diffusion from the region of high concentration to low concentration. When the concentration of CO2 and water is higher in external environment than that inside the cell, CO2 and water moves inside the cell. When the concentration outside the cell becomes low and it is high inside the cell, they moves out.
Posted by Palak Burman 5 years, 7 months ago
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Music Lover? 5 years, 7 months ago
Posted by Palak Burman 5 years, 7 months ago
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Palak Burman 5 years, 7 months ago
Yogita Ingle 5 years, 7 months ago
Most metals are good conductors of heat and are solid at room temperature. Mercury is the only metal that is in liquid state at room temperature. It’s used in thermometers because it has a high coefficient of expansion. In a mercury thermometer, a glass tube is filled with mercury and a standard temperature scale is marked. The mercury expands and contracts with the changes in the temperature. The mercury thermometers are used in laboratory experiments, households and industrial applications.
Posted by Palak Burman 5 years, 7 months ago
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Miss__ Thakur 5 years, 7 months ago
Posted by Palak Burman 5 years, 7 months ago
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Priya Sahani Priya 5 years, 7 months ago
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Yogita Ingle 5 years, 7 months ago
If the body starts from a place and returns back to the starting point.
For ex. In a circular path around a park, if a jogger starts from point A, takes a round of the park and returns back to point A, then his resultant displacement will be 0.
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