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Ask QuestionPosted by Krishna Chander 4 years, 1 month ago
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Ziya Rehaman 3 years, 11 months ago
Gaurav Seth 4 years, 1 month ago
The normal room temperature which would be comfortable for living is around 20 - 25° C.
In chemistry, The upper limit 25°C is taken as Standard room temperature .
We know that,
Temperature on Celsius + 273 = Temperature on Kelvin.
Now,
25°C = 25 + 273 = 298K .
Therefore, The standard room temperature in Kelvin is 298 k
Posted by Raymond Tongco 4 years, 1 month ago
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Posted by Raymond Tongco 4 years, 1 month ago
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Posted by Rahul Dhakar 4 years, 1 month ago
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Posted by Dhiya Praveena 4 years, 1 month ago
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Posted by Yash Baldev 4 years, 1 month ago
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Posted by Raymond Tongco 4 years, 1 month ago
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Posted by Raymond Tongco 4 years, 1 month ago
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Posted by Vikram Kumar 4 years, 1 month ago
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Prakhar Singh 1 year, 11 months ago
Yogita Ingle 4 years, 1 month ago
In short, the Big Bang hypothesis states that all of the current and past matter in the Universe came into existence at the same time, roughly 13.8 billion years ago. At this time, all matter was compacted into a very small ball with infinite density and intense heat called a Singularity. Suddenly, the Singularity began expanding, and the universe as we know it began.
Posted by Raza Faizi 4 years, 1 month ago
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Harsh Mishra 4 years, 1 month ago
Posted by Pradakshina ?? 4 years, 1 month ago
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Harsh Mishra 4 years, 1 month ago
Yogita Ingle 4 years, 1 month ago
Andreas Vesalius was a Belgian born anatomist and a physician. Vesalius published his most important work, 'De Humani Corporis Fabrica Libri Septem' (seven books on the fabric of human body), generally known as Fabrica. Fabrica is the most famous anatomy book ever written and also the first book on human anatomy to be reasonably accurate. He is thus known as the father of anatomy.
Posted by Leishithem Awungshi 4 years, 1 month ago
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Yogita Ingle 4 years, 1 month ago
- The per capita income in an underdeveloped economy is low,and therefore,majorityof the population live below the poverty line. Consequently, people in this economy live in miserable conditions.
- In mostunderdeveloped economies, the population growth rate is very high as compared to the other economies. Also, because of improved medical facilities, the mortality rate among all the sections of societyis reduced. As a result, as the population increases, the consumption of the limited resources also increases, resulting in less saving of resources and a slower growth rate.
- For many under developed economies enriched with large and sufficient resources,most of these resources remain underutilised because oflack of skilled personnel and technology.
- Underdeveloped economies suffer from widespread unemployment. Because of various reasons,such as rapid population growth and lack of investment, unemployment prevails in such an economy. It is estimated that underemployment and unemployment together constitute nearly30% of the workforce of an underdeveloped economy.
- Inequality in the distribution of income is prevalent in these economies. As a large part of the national income goes to smaller sections of society, the larger sections of society have to be satisfied with whatever part of income is available to them. According to the Human Development Index, the top 20% of India’s population receives 45.3% of the national income,while the poorest 20% of the population receives 8.1% of the national income.
Posted by Nikhil Saini 4 years, 1 month ago
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Posted by Srikant Khuntia 4 years, 1 month ago
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Yogita Ingle 4 years, 1 month ago
Newton’s laws of motion imply the relationship between an object’s motion and the forces acting on it. In the first law, we come to understand that an object will not change its motion unless a force acts on it. The second law states that the force on an object is equal to its mass times its acceleration. And, finally, the third law states that for every action, there is an equal and opposite reaction.
What are some daily life examples of Newton’s 1st, 2nd and 3rd laws of motion?
Riding a bicycle is a good example of Newton’s 2nd law. In this example, the bicycle is the mass. The leg muscles pushing on the pedals of the bicycle is the force.
- The motion of a ball falling through the atmosphere, or a model rocket being launched up into the atmosphere are both excellent examples of Newton’s 1st law.
- You hit a wall with a certain amount of force, and the wall returns that same amount of force. This is an example of Newton’s 3rd law.
Posted by Himanshi Goyal 4 years, 1 month ago
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Lavish Tyagi 3 years, 11 months ago
Posted by Aman Kumar 4 years, 2 months ago
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Posted by Khan Khan 4 years, 2 months ago
- 3 answers
Nishant Sharma 3 years, 7 months ago
Yogita Ingle 4 years, 2 months ago
- Velocity: Velocity is the speed of an object moving in a definite direction.
- The SI unit of velocity is also metre per second.
- Velocity is a vector quantity; it has both magnitude and direction.
Posted by Kanchan Jadhav 4 years, 2 months ago
- 3 answers
Yogita Ingle 4 years, 2 months ago
Mitosis is that step in the cell cycle where the newly formed DNA is separated and two new cells are formed with the same number and kind of chromosomes as the parent nucleus.
Posted by Tanu Kamble 4 years, 2 months ago
- 2 answers
Shivam Yadav 4 years, 1 month ago
Gaurav Seth 4 years, 2 months ago
Consider a parallel plate capacitor without any dielectric medium (vacuum) between the plates. Let A be the area of the plates and d be the plate separation. The two plates have charges Q and – Q. Since d is much smaller than the linear dimension of the plates (d2 << A),
Plate 1 has surface charge density σ = Q/A and plate 2 has a surface charge density – σ. Using earlier result of the electric field in different regions is: Outer region I (region above the plate 1),
Outer region II (region below the plate 2),
In the inner region between the plates 1 and 2, the electric fields due to the two charged plates add up, giving
The direction of electric field is from the positive to the negative plate. Thus, the electric field is localised between the two plates and is uniform throughout. For plates with finite area, this will not be true near the outer boundaries of the plates. The field lines bend outward at the edges – an effect called ‘fringing of the field’. Hence σ will not be strictly uniform on the entire plate.
However, for d2 << A, these effects can be ignored in the regions sufficiently far from the edges, and the field there is given by Eq. (1). Now for uniform electric field, potential difference is simply the electric field times the distance between the plates, that is,
The capacitance C of the parallel plate capacitor is then
which, as expected, depends only on the geometry of the system.
Posted by Pradakshina ?? 4 years, 2 months ago
- 4 answers
Ranjeet Katariya 3 years, 7 months ago
Yogita Ingle 4 years, 2 months ago
Carolus Linnaeus is the father of taxonomy because of one of his contributions.
Posted by Ahsu Ahsu 4 years, 2 months ago
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Posted by Vikram Kumar 4 years, 2 months ago
- 3 answers
Yogita Ingle 4 years, 2 months ago
1 score =20 years
Let the age be x.
Then, x+ 1/2x+3x3=4x20+7
⇒3/2x+9=80+7
⇒3/2 x=78
⇒x=78×2/3
⇒x=52
Therefore, the age is 52 years.
Posted by Ajay Kumar 4 years, 2 months ago
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Posted by Ajay Kumar 4 years, 2 months ago
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Posted by Krishna Kumar 4 years, 2 months ago
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Posted by Daleshwar Sahu 4 years, 3 months ago
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Posted by Vikram Kumar 4 years, 3 months ago
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Gaurav Seth 4 years, 2 months ago
The Changing of a solid directly into vapours on heating,and of vapours into solid on cooling is called as sublimation.
The solid substance which undergoes sublimation is called sublime.
The solid obtained by cooling the vapours of the solid called a sublimate.
For Ex:camphor,Iodine,Ammonium Chloride,Naphthalene etc.
Posted by Gulshan Kumar 4 years, 3 months ago
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Ziya Rehaman 3 years, 11 months ago
Paritosh Dansena 4 years, 2 months ago
Gaurav Seth 4 years, 3 months ago
Dimensions of a physical quantity are powers (exponents) to which base quantities are raised to represent that quantity. They are represented by square brackets around the quantity.
- Dimensions of the 7 base quantities are – Length [L], Mass [M], time [T], electric current [A], thermodynamic temperature [K], luminous intensity [cd] and amount of substance [mol].
Force = Mass x Acceleration = [M][L]/[T]2 = [MLT-2]
Posted by Gulshan Kumar 4 years, 3 months ago
- 2 answers
Gaurav Seth 4 years, 3 months ago
Aristotle is known as the “Father of Biology” because he extensively studied the natural world and contemplated its origins using scientific insights and systematic observations rather than attributing it to divine intervention. He was also the first to uncover the relationship between animals and establish a system of classification.
During his time, Aristotle made many observations about the local flora and fauna, for instance, he was the first to document that an octopus can change its colour when disturbed. He also named close to 500 species of animals, identifying their characteristic features and documenting them.
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Harshada Mehetre 3 years, 10 months ago
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