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Ask QuestionPosted by Aparna Singh 5 years, 7 months ago
- 2 answers
Yogita Ingle 5 years, 7 months ago
Yes because then if it doesn't move in a straight line then it's speed would not be uniform.
Uniform speed means the object covers equal DISTANCE in an equal time intervals.
It's not necessary that the object must travel in straight travel.
For example:
Let us consider an object moving in a uniform circular path.The object has uniform speed but at every point of journey it's direction changes which changes it's velocity and object motion will be accelerated.
Posted by Aparna Singh 5 years, 7 months ago
- 1 answers
Yogita Ingle 5 years, 7 months ago
The magnitude of the displacement is always less than or equal to the distance traveled. If two displacements in the same direction are added, then the magnitude of their sum will be equal to the distance traveled.
Posted by Aparna Singh 5 years, 7 months ago
- 1 answers
Yogita Ingle 5 years, 7 months ago
Because displacement is the shortest distance between the initial point and final point
while distance is the total path length which can never be less than displacement
however, the magnitude of displacement and distance traveled by an object can be equal if it is moving in a straight line
Posted by Krrish Bhardwaj 5 years, 7 months ago
- 5 answers
Yogita Ingle 5 years, 7 months ago
The Kharif cropping season starts with the onset of monsoon and ends when the rainy season is over. The rabi crops are sown at the end of monsoon and harvested before the advent of the summer season. These crops require good rainfall. The output of these crops depends upon the time and amount of rainwater. Paddy, maize, bajra, jowar are a few Kharif crops grown in India.
Posted by Nandini Dubey 5 years, 7 months ago
- 5 answers
Lavish Gujjar 5 years, 7 months ago
Posted by Babu Lal 5 years, 7 months ago
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Sahaj Khandelwal 5 years, 7 months ago
Arpana Bharti 5 years, 7 months ago
Posted by Kanishka Sengar 5 years, 7 months ago
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Posted by Krish Agarwal 5 years, 7 months ago
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Posted by Neelakshi Sharma 5 years, 7 months ago
- 3 answers
Srushti Khadtare 5 years, 7 months ago
Posted by Harshit Harshit 5 years, 7 months ago
- 1 answers
Meghna Thapar 5 years, 5 months ago
When an impurity is added to substance, its Boiling point is elevated. Reason: The elevation[increase] in boiling point increases with the increases in concentration of the solute because on adding the solute, vapor pressure of solution becomes lower than pure solvent. Adding impurities to a solution, in most cases, increases the boiling point of the solution. This occurs because the presence of impurities decreases the number of water molecules available to become vaporized during boiling.
Posted by Nammi Nammi 5 years, 7 months ago
- 0 answers
Posted by Yash Thakkar 5 years, 7 months ago
- 5 answers
Lavish Gujjar 5 years, 7 months ago
Srushti Khadtare 5 years, 7 months ago
Posted by Ak Kumar 5 years, 7 months ago
- 5 answers
Yash Thakkar 5 years, 7 months ago
Yogita Ingle 5 years, 7 months ago
The SI unit of temperature as per the International System of Units is Kelvin which is represented by the symbol K. The Kelvin scale is widely accepted or used in the field of science and engineering. However, in most parts of the world, Celsius or Fahrenheit scale is used for measuring temperature.
Posted by Akash Srinivasa 5 years, 7 months ago
- 2 answers
Arpana Bharti 5 years, 7 months ago
Yogita Ingle 5 years, 7 months ago
•LATENT HEAT OF FUSION- the amount of heat energy required to change 1kg of solid into liquid under the given atmospheric pressure at it's melting point is called latent heat of fusion
• LATENT HEAT OF VAPORIZATION- the amount of heat energy required to change 1 kg of liquid into gas at the given atmospheric pressure at it's boiling point is called latent heat of vaporization.
Posted by Mamneet Kaur 5 years, 7 months ago
- 1 answers
Srushti Khadtare 5 years, 7 months ago
Posted by Chirag Raj 5 years, 7 months ago
- 1 answers
Meghna Thapar 5 years, 6 months ago
The nucleus is a large, centrally located spherical cellular component. It is bounded by two nuclear membranes, both forming a nuclear envelope. The nuclear envelope separates the nucleus from the cytoplasm. Within nucleoplasm two types of nuclear structures are embedded – the nucleolus and chromatin material. The nucleolus may be one or more in number and is not bounded by any membrane. It is rich in protein and RNA molecules and acts as the site for ribosome formation.
Posted by Rishabh Singh 5 years, 6 months ago
- 3 answers
Yogita Ingle 5 years, 7 months ago
Pasteurisation is a process of heating milk to a temperature of 70oC for 15 to 30 seconds and then quickly cooling it down to 10oC. This kills any microorganisms present in the milk. Louis Pasteur developed the process of pasteurisation.
Posted by Harsh Khatri 5 years, 7 months ago
- 2 answers
Yogita Ingle 5 years, 7 months ago
Water is a compound and a compound forms whenever two or more atoms atoms form chemical bonds with each other. The chemical formula for water is H2O which means each molecule of water consists of one oxygen atom chemically bonded to two hydrogen atoms.
Posted by Ankit Jain 5 years, 7 months ago
- 1 answers
Posted by Naina . 5 years, 7 months ago
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Posted by Sandhya Gogoi 5 years, 7 months ago
- 2 answers
Yogita Ingle 5 years, 7 months ago
Biodiversity describes the richness and variety of life on earth. It is the most complex and important feature of our planet. Without biodiversity, life would not sustain.
The term biodiversity was coined in 1985. It is important in natural as well as artificial ecosystems. It deals with nature’s variety is biosphere. It refers to variabilities among plants, animals and microorganism species.
Biodiversity includes the number of different organisms and their relative frequencies in an ecosystem. It also reflects the organisation of organisms at different levels.
Biodiversity holds ecological and economic significance. It provides us with nourishment, housing, fuel, clothing and several other resources. It also extracts monetary benefits through tourism. Therefore, it is very important to have a good knowledge of biodiversity for a sustainable livelihood.
Posted by Prita Thakur 5 years, 7 months ago
- 2 answers
Yogita Ingle 5 years, 7 months ago
Crystallisation- Crystallization is a process that separates a pure solid in the form of its crystals from a solution. This method is used to purify solid, example the salt we get from sea water can have many impurities in it. To remove these impurities, the process of crystallization is used. Crystallization technique is better than simple evaporation technique as-
• Some solids decompose or some, like sugar, may get charred during heating to dryness.
• Some impurities may remain dissolved in the solution even after filtration. On evaporation these contaminate the solid.
Posted by Chittiri Dhanalakshmi 5 years, 7 months ago
- 1 answers
Aminah Sufi 5 years, 7 months ago
Posted by Yash Soni 5 years, 7 months ago
- 1 answers
Yogita Ingle 5 years, 7 months ago
Rational numbers: The rational numbers are numbers which can be expressed as a fraction and also as positive numbers, negative numbers and zero. It can be written as p/q, where q is not equal to zero.
Rational word is derived from the word ‘ratio’, which actually means a comparison of two or more values or integer numbers and is known as a fraction. In simple words, it is the ratio of two integers.
Example: 3/2 is a rational number. It means integer 3 is divided by another integer 2.
Irrational numbers: The numbers which are not a rational number are called irrational numbers. Now, let us elaborate, irrational numbers could be written in decimals but not in fractions which means it cannot be written as the ratio of two integers.
Irrational numbers have endless non-repeating digits after the decimal point. Below is the example of the irrational number:
Example: √8=2.828…
Posted by Jaideep Blood Bank 5 years, 7 months ago
- 5 answers
Arpana Bharti 5 years, 7 months ago
Lavish Gujjar 5 years, 7 months ago
Yogita Ingle 5 years, 7 months ago
Amoeba is a unicellular organism that has the ability to change its shape. They are usually found in water bodies such as ponds, lakes and slow-moving rivers. Sometimes, these unicellular organisms can also make their way inside the human body and cause various illnesses.
Posted by Om Prakash Bhoi 5 years, 7 months ago
- 4 answers
Jaideep Blood Bank 5 years, 7 months ago
Posted by Aparna Singh 5 years, 7 months ago
- 1 answers
Yogita Ingle 5 years, 7 months ago
(a) Diffusion
(i) All the matter is made up of tiny particles, such as atoms and molecules.
(ii) The particles are moving or they are in motion.
(b) Brownian motion
(i) All the matter is made up of tiny particles, such as atoms and molecules.
(ii) The particles are moving or they are in motion.
Posted by Harsh Khatri 5 years, 7 months ago
- 1 answers
Yogita Ingle 5 years, 7 months ago
- The potash alum dissolve the sample in distilled water and remove the insoluble impurities by filtration.
- This solution is concentrated to the crystallisation point and cooled.
- Colourless transparant crystals of potash alum separate.
Posted by Sukhmandeep Kaur Sidhu 5 years, 7 months ago
- 5 answers
Aminah Sufi 5 years, 7 months ago
Yogita Ingle 5 years, 7 months ago
Acceleration
- Acceleration: It is a measure of the change in the velocity of an object per unit time.
- Acceleration can be caused either by change in direction of motion or change in speed or both.
Acceleration = Change in velocity/Time taken
- SI unit is ms-2.
Posted by Aparna Singh 5 years, 7 months ago
- 2 answers
Yash Thakkar 5 years, 7 months ago
Meghna Thapar 5 years, 7 months ago
This is one of the example of diffusion in solids. It took lot of time because of strong forces of attraction between the particles of solids. Alloy of metals is an example of the diffusion of a solid in another solid.
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Shashwat Mishra 5 years, 7 months ago
1Thank You