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Ask QuestionPosted by Uma Shankar Upadhyay 5 years, 5 months ago
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Navjot Kaur 5 years, 5 months ago
Posted by Sarbjeet Singh 5 years, 5 months ago
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Akash Panchal 5 years, 5 months ago
Posted by Chingneau Rebecca Konyak 5 years, 5 months ago
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Posted by Jo Tesh 5 years, 5 months ago
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Navjot Kaur 5 years, 5 months ago
Om Bhimani 5 years, 5 months ago
Posted by Jo Tesh 5 years, 5 months ago
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Meghna Thapar 5 years, 1 month ago
Rutherford postulated that the atom must contain large empty spaces as most of the α-particles passed through it without getting deflected. Some α-particles were deflected by the foil through small angles, while some were deflected through very large angles. Thus, Rutherford concluded that the positively charged particles in an atom must be concentrated in a very small space.
One out of every 12,000 particles were deflected through 180o showing a full rebound. Thus, Rutherford came to the conclusion that all the positive charges of the atom and most of the mass of the atom is concentrated in a very small volume within the atom.
Rutherford named this small space inside the atom as the nucleus of the atom or the atomic nucleus. On the basis of these observations, Rutherford calculated that the atomic nucleus is 105 times smaller than the total area of the atom. The radius of the atom is 10-8 centimetres while the radius of the nucleus is 10-13 centimetres.
Thus, we can say that the atom is relatively hollow with a heavy nucleus at its centre. The electrons arranged around the nucleus possess negligible mass.
Posted by Jo Tesh 5 years, 5 months ago
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Posted by Satyansh Dubey 5 years, 5 months ago
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Navjot Kaur 5 years, 5 months ago
Posted by Musab Umair Hashmi 5 years, 5 months ago
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Posted by Abhineet Kumar 5 years, 5 months ago
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Mb Vadhel 5 years, 5 months ago
Yogita Ingle 5 years, 5 months ago
It is the ability of an atom to gain or lose electron in order to achieve the noble gas configuration. It refers to the ability of an element to combine with other element. It is obtained by determining the number of electrons in the outermost shell (also called valence shell) of each atom of an element. For instance, sodium has 1 electron in its outermost shell and hence valency of sodium is 1.
Musab Umair Hashmi 5 years, 5 months ago
Posted by Darshan Jain 5 years, 5 months ago
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Yogita Ingle 5 years, 5 months ago
Ceilings of concert halls are curved so that the sound after reflection reaches every corner of the concert hall and the audience can listen the sound clearly.
Posted by Uday Shah 5 years, 5 months ago
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Yogita Ingle 5 years, 5 months ago
- The cycling of chemicals between the biological and the geological world is called biogeochemical cycle.
- The biotic and abiotic components of the biosphere constantly interact through biogeochemical cycles. During these interactions, there is a transfer of nutrients between living organisms and the non-living environment.
- The four important biogeochemical cycles are water cycle, nitrogen cycle, carbon cycle and oxygen cycle.
Posted by Bora Deepika 5 years, 5 months ago
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Shrimi Raj 5 years, 5 months ago
Posted by Bora Deepika 5 years, 5 months ago
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Yogita Ingle 5 years, 5 months ago
A sound of single frequency is called a tone. A sound that is produced when several frequencies are mixed is called a note. For example a musical note has tones of various frequencies (sounds of different pitch) and amplitudes (loudness). A note has many component waves in it whereas a tone is represented by a single wave form.
Shrimi Raj 5 years, 5 months ago
Posted by Bora Deepika 5 years, 5 months ago
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Yogita Ingle 5 years, 5 months ago
Yes, A single cell live independently on its own. THIS can be explained by an example.Ex: Amoeba.Amoeba is a single celled organism That can perform everything a living organism needs to.It can take its own food, respire,reproduce etc. Hence, it is not dependent on anyone and can live independently. so, It can be also called a complete organism.
Posted by Ujjawal Gupta 5 years, 5 months ago
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Anuj Kumar Singh 5 years, 5 months ago
Efat Naaz 5 years, 5 months ago
Posted by Chirag Gupta 5 years, 5 months ago
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Anuj Kumar Singh 5 years, 5 months ago
Posted by Himanshu Sinha 5 years, 5 months ago
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Himanshu Sinha 5 years, 5 months ago
Ahmad Raza Chishti 5 years, 5 months ago
Posted by Sheetal Gupta 5 years, 5 months ago
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Posted by Namrta Dwivedi 5 years, 5 months ago
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Kushangi ..... 5 years, 5 months ago
Yogita Ingle 5 years, 5 months ago
A sponge can be compressed easily but still we count them in solids because they have minute pores in it which are filled with air. When we press the sponge air is expelled from its holes making it highly compressible.
Posted by Intekhab Ahmad 5 years, 5 months ago
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Yogita Ingle 5 years, 5 months ago
The frequency of 100 hertz means that the source of sound vibrates 100 times in 1 second.
[1min = 60 sec]
Number of vibrations in 1 second= 100
Number of Vibrations in 60 Second( 1min)=100× 60 = 6000
Hence, the source of sound vibrates 6000 times in a minute.
Posted by Rajaram Yadav 5 years, 5 months ago
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Yogita Ingle 5 years, 5 months ago
If the ball is thrown upwards, the value of acceleration due to gravity will remain unchanged.
Posted by Rajaram Yadav 5 years, 5 months ago
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Sanket Singh 5 years, 5 months ago
Posted by Lata Gusain 5 years, 5 months ago
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Posted by Akul Gupta 5 years, 5 months ago
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Yogita Ingle 5 years, 5 months ago
Let the two bodies have masses m1 and m2 respectively such that m2 > m1 . Then, for first object p1 = m1v1 and for second object p2 = m2v2
But p1 = p2 or m1v1 = m2v2
Since m1 < m2, then v1 > v2
Now, K = 1/2 mv^2 = 1/2 pv, therefore,
K1/K2 = p1v1 / p2v2 = v1/v2
But v1 > v2
Therefore, kinetic energy of body of lesser mass is more.
Posted by Abhishek Kumar 5 years, 5 months ago
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Saur Deshmukh 5 years, 5 months ago
Posted by Mamta Gupta Mamta Gupta 5 years, 5 months ago
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Posted by Nasab Malik 5 years, 5 months ago
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Amir Rahmani 5 years, 5 months ago
Yogita Ingle 5 years, 5 months ago
The ability of the human eye to adjust itself such that it can see objects which are nearby and faraway is called Accommodation.
It primarily involves the lens and ciliary muscles.
The ciliary muscles are capable of modifying the curvature of the lens and thereby affecting the focal length of the lens.
When viewing objects which are nearby, the ciliary muscles contract, the lens becomes thicker. It is squeezed into a more convex shape and the focal length decreases (curvature increases). The images again falls on the retina. Note that here the eye is 'accommodating' by taking a thicker shape so that the image falls on the retina
Posted by Khushal Sharma 5 years, 5 months ago
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Posted by Savita Jha 5 years, 5 months ago
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Sanskar Singh 5 years, 5 months ago
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