Ask questions which are clear, concise and easy to understand.
Ask QuestionPosted by Raj Kumar 5 years, 3 months ago
- 1 answers
Posted by Tanupriya Bhagat 5 years, 3 months ago
- 5 answers
Master Knowledge Source 5 years, 3 months ago
Shakti Chaturvedi 5 years, 3 months ago
Ananya Gaur 5 years, 3 months ago
Yogita Ingle 5 years, 3 months ago
- As the object covers equal distances in equal intervals of time, it is said to be in uniform motion.
Example- Motion of planets around Sun, they revolve at a constant speed. So the distance travelled in every equal time period is equal
Priyanshu Kumar 5 years, 3 months ago
Posted by Chirag Dahiya 5 years, 3 months ago
- 5 answers
Posted by Chirag Dahiya 5 years, 3 months ago
- 1 answers
Posted by Arjun Singh 5 years, 3 months ago
- 3 answers
Madhav Grover 5 years, 3 months ago
Meghna Thapar 5 years, 3 months ago
If it has an initial velocity u, and it accelerates, at a constant rate a, to a velocity v, in t seconds, then, by Newton's Second Law, F = ma. But since a = (v-u)/t, F = m (v - u)/t or F = (mv - mu)/t. This is saying that the force is equal to the rate of change of momentum, where momentum = mass x velocity. The first equation states that a Force is equal to Mass times Acceleration, or Newton's second law of motion. The second one states that Momentum (P) is equal to Mass times Velocity. This means that a force is the rate at which an object's momentum is changing over time.
Posted by Sayani Biswas 5 years, 3 months ago
- 1 answers
Meghna Thapar 5 years, 3 months ago
Most fungi reproduce by releasing tiny spores that then germinate (sprout) and grow into a new fungus. The spores are produced by, and released from, a fruiting body that is visible above the ground. Some fungi drop spores, which are blown away by the wind. Spores are products of both sexual and asexual reproduction and act as the prime units of dispersal in fungi. Most spores that settle on an appropriate substrate under favourable environmental conditions germinate to produce one or more germ tubes and a new fungal mycelium.
Posted by Hutoli Yeptho 5 years, 3 months ago
- 0 answers
Posted by Rani Singh 5 years, 3 months ago
- 1 answers
Yogita Ingle 5 years, 3 months ago
let us demonstrate the sublimation by taking the example of Ammonium chloride.
In China dish , Take a Small amount of the Substance. The dish is covered by a perforated sheet. A glass funnel in the inverted position is placed over the dish so as to cover it. The steam of the funnel is plugged with cotton. The dish is heated from below.
As a result, ammonium chloride undergoes sublimation i.e :- it changes into vapours which pass through the holes or perforations of the perforated sheet. The vapours get cooled in the upper portion of the funnel and change to the solid form. The latter gets deposited on the inner walls of the funnel and can be suitably removed later on. The cotton plug does not allow any vapours of the Substance to escape.
Posted by Riddhima Sharma 5 years, 3 months ago
- 3 answers
Gaurav Seth 5 years, 3 months ago
Smooth endoplasmic reticulum in liver cells of vertebrates helps in detoxification. It metabolises various toxic or poisonous substances such as drugs, aspirin, insecticides (DDT), petroleum products and pollutants. These toxic substances make their entry in animal’s body through food, air or water.
Posted by Rashmi Mali 5 years, 3 months ago
- 1 answers
Yogita Ingle 5 years, 3 months ago
Physical changes are reversible in nature and occur when the bonds are rearranged or the forces of intermolecular attraction change with the application or heat or pressure, etc. New bonds are not formed during a physical change.
Posted by Anjali Niware 5 years, 3 months ago
- 1 answers
Chirag Dahiya 5 years, 3 months ago
Posted by Shivansh Khare 5 years, 3 months ago
- 1 answers
Lakshya Hooda 5 years, 3 months ago
Posted by Divya Gupta 5 years, 3 months ago
- 4 answers
Ayush Sharma 5 years, 3 months ago
Lakshya Hooda 5 years, 3 months ago
Posted by Fauziya I M 5 years, 3 months ago
- 2 answers
Yogita Ingle 5 years, 3 months ago
Following are the basic three states of matter:
- Solid
- Liquid
- Gas
Apart from the above mentioned three, there are 2 more states of matter which we do not see in our everyday life. They are Plasma & Bose-einstein condensate.
Posted by Bhumika Rao 5 years, 3 months ago
- 1 answers
Posted by Ruby --- 5 years, 3 months ago
- 3 answers
Posted by Mishty Panchal 5 years, 3 months ago
- 3 answers
Tanishq Daiya 5 years, 3 months ago
Posted by Mishty Panchal 5 years, 3 months ago
- 3 answers
Tanishq Daiya 5 years, 3 months ago
Meghna Thapar 5 years, 3 months ago
In the centre of a black hole is a gravitational singularity, a one-dimensional point which contains infinite mass in an infinitely small space, where gravity become infinite and space-time curves infinitely, and where the laws of physics as we know them cease to operate. The gravitational pull of the black hole is so strong that, in order to escape it, an object would have to be moving faster than the speed of light.
Posted by Mishty Panchal 5 years, 3 months ago
- 4 answers
Shakti Chaturvedi 5 years, 3 months ago
Posted by Mishty Panchal 5 years, 3 months ago
- 1 answers
Meghna Thapar 5 years, 3 months ago
The fertility rate due to the population policies and other measures has been falling but even then it is much higher compared to other countries. This means that the birth rate has been falling, but with rapid progress in medical sciences, the death rate has fallen which has ensured that the population grows.
Decreasing child mortality, improving education and providing people with economic opportunities all help to reduce fertility and population growth. International aid, fair trade and global justice are all tools to help bring global population back to sustainable levels.
Posted by Mishty Panchal 5 years, 3 months ago
- 3 answers
Diksha Panchal 5 years, 3 months ago
Posted by Mishty Panchal 5 years, 3 months ago
- 3 answers
Posted by Mishty Panchal 5 years, 3 months ago
- 4 answers
Posted by Harsh Tanwar 5 years, 3 months ago
- 2 answers
Meghna Thapar 5 years, 3 months ago
The DNA in prokaryotes is contained in a central area of the cell called the nucleoid, which is not surrounded by a nuclear membrane. Many prokaryotes also carry small, circular DNA molecules called plasmids, which are distinct from the chromosomal DNA and can provide genetic advantages in specific environments. The nuclear membrane, sometimes referred to as the nuclear envelope, is the membrane that encloses the nucleus. This bilayer membrane is made of lipids, and encases the genetic material in eukaryotic cells. The nuclear membrane is made up of a double lipid bilayer.
Posted by Bipratik Dey 5 years, 3 months ago
- 1 answers
Posted by Nitin Karki 5 years, 3 months ago
- 1 answers
Yogita Ingle 5 years, 3 months ago
The limitations of J.J Thomson's model of an atom are:
1. J.J Thomson's model of the atom could not explain the results of Alpha particle scattering experiment carried out by Rutherford.
That is J.J Thomson's model of the atom could not explain why most of the positively charged Alpha particles pass Straight through the gold foil ,a few Alpha particles are deflected through small and large angles, Whereas a very few Alpha particles completely rebound on hitting the gold foil and turn back on their path.
2. J.J Thomson's model of the atom was just based on imagination it did not have any experimental evidence in its support like the Rutherford's Model of the atom.
Posted by Kunal Ranjan Ray 5 years, 3 months ago
- 4 answers
Posted by Thaarani Rani 5 years, 3 months ago
- 0 answers
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
Yogita Ingle 5 years, 3 months ago
Simple distillation is the process of separating components of mixture containing two miscible liquids that boil without decomposition and have sufficient difference in their boiling points
0Thank You