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Ask QuestionPosted by Shrijeet Sharma 5 years, 6 months ago
- 4 answers
Yogita Ingle 5 years, 6 months ago
From air- oxygen and nitrogen
From water - Hydrogen and minerals...
Posted by Suraj Sharma 5 years, 6 months ago
- 1 answers
Yogita Ingle 5 years, 6 months ago
When a body moves along a straight line path, its motion is said to be one-dimensional motion.
Posted by Kusum Lata 5 years, 6 months ago
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Anish Kumar 5 years, 6 months ago
Gaurav Seth 5 years, 6 months ago
(1) First equation of Motion:
V = u + at
soln.
Consider a body of mass “m” having initial velocity “u”.Let after time “t” its final velocity becomes “v” due to uniform acceleration “a”.
Now we know that:
Acceleration = change in velocity/Time taken
=> Acceleration = Final velocity-Initial velocity / time taken
=> a = v-u /t
=>at = v-u
or v = u + at
This is the first equation of motion.
—————————————-
(2) Second equation of motion:
s = ut + 1/2 at^2
sol.
Let the distance travelled by the body be “s”.
We know that
Distance = Average velocity X Time
Also, Average velocity = (u+v)/2
.: Distance (t) = (u+v)/2 X t …….eq.(1)
Again we know that:
v = u + at
substituting this value of “v” in eq.(2), we get
s = (u+u+at)/2 x t
=>s = (2u+at)/2 X t
=>s = (2ut+at^2)/2
=>s = 2ut/2 + at^2/2
or s = ut +1/2 at^2
This is the 2nd equation of motion.
……………………………………………………………
(3) Third equation of Motion
v^2 = u^2 +2as
sol.
We know that
V = u + at
=> v-u = at
or t = (v-u)/a ………..eq.(3)
Also we know that
Distance = average velocity X Time
.: s = [(v+u)/2] X [(v-u)/a]
=> s = (v^2 – u^2)/2a
=>2as = v^2 – u^2
or v^2 = u^2 + 2as
This is the third equation of motion.
Posted by Shivani Yadav 5 years, 6 months ago
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Anish Kumar 5 years, 6 months ago
Posted by Dev King 5 years, 6 months ago
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Meghna Thapar 5 years, 5 months ago
The production of gas in the tissues or organs of the body is called aerosis.
Posted by Babli Singh 5 years, 6 months ago
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Posted by Shikha Mishra 5 years, 6 months ago
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Siddharth Ahluwalia 5 years, 6 months ago
Posted by Nagendra Darji 5 years, 6 months ago
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Mohinderjeet Singh 5 years, 6 months ago
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Posted by Partha Saikia 5 years, 6 months ago
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Meghna Thapar 5 years, 5 months ago
Plasma is a state of matter that is often thought of as a subset of gases, but the two states behave very differently. But unlike ordinary gases, plasmas are made up of atoms in which some or all of the electrons have been stripped away and positively charged nuclei, called ions, roam freely.
Posted by Chandan Yadav 5 years, 6 months ago
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Pankaj Goswami 5 years, 6 months ago
Posted by Amar Sinha 5 years, 6 months ago
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Meghna Thapar 5 years, 5 months ago
Centrosomes are structures found inside of cells. They are made from two centrioles. Centrioles are microtubule rings. The main purpose of a centrosome is to organize microtubules and provide structure for the cell, as well as work to pull chromatids apart during cell division.
Posted by Md Faiyaj 5 years, 6 months ago
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Khushi Gadhavi 5 years, 6 months ago
Bro . 5 years, 6 months ago
Efat Naaz 5 years, 6 months ago
Himanshu Kumar 5 years, 6 months ago
Roshanraviranjan Kumarsingh 5 years, 6 months ago
Posted by Sutha Selvi 5 years, 6 months ago
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Posted by Pal Pathak 5 years, 6 months ago
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Kavya Kavya 5 years, 6 months ago
Bro . 5 years, 6 months ago
Posted by Ravi Ranjan 5 years, 6 months ago
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Posted by Joking Viedeos Jyoti 5 years, 6 months ago
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Yogita Ingle 5 years, 6 months ago
Phylum to which they belong:
1) Cockroach - Arthropoda.
2) Earthworm - Annelida.
Posted by Kushangi ..... 5 years, 6 months ago
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Pankaj Goswami 5 years, 6 months ago
Posted by Rohan Chaudhary 5 years, 6 months ago
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Bro . 5 years, 6 months ago
Yogita Ingle 5 years, 6 months ago
The law states that mass can neither be created nor destroyed in a chemical reaction i.e. Total masses of reactants is equal to the sum of masses of products and the masses of unreacted reactants. For instance, the reaction of carbon with oxygen to produce carbon-dioxide involves conservation of mass in the following way.
C (12g) + O2 (32g) → CO2 (44g)
Here we used 12 g of carbon and 32 g of oxygen. After reaction the amount of carbon –dioxide produced will be 44g i.e. the sum total of the amount of carbon and oxygen used.
Posted by Vaibhav Singh 5 years, 6 months ago
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Posted by Hargun Singh 5 years, 6 months ago
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Bro . 5 years, 6 months ago
Posted by Mahendra Pratap Singh 5 years, 6 months ago
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Pankaj Goswami 5 years, 6 months ago
Posted by Bhomic Roy 5 years, 6 months ago
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Bro . 5 years, 6 months ago
Kushangi ..... 5 years, 6 months ago
Posted by Kamal Khakhodiya 5 years, 6 months ago
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Pankaj Goswami 5 years, 6 months ago
Posted by Ujjwal Kant 5 years, 6 months ago
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Posted by Ujjwal Kant 5 years, 6 months ago
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Meghna Thapar 5 years, 5 months ago
The weight of an object on the moon will be about one-sixth of what is on the earth. Thus, a spring balance which shows the weight of a body to be 6 N on earth will show a weight of only 1 N when taken to the moon. The weight of an object on the moon is less than that on the earth because the mass and radius of the moon are less than that of earth.
Suppose we have an object of mass m. let its weight on the moon be Wm, the mass of the moon is Mm and its radius is Rm. now, according to the universal law of gravitation, the weight of the object on the moon will be:
Wm = G x Mm x m/Rm2
Let the weight of the same object on the earth be We. The mass of the earth is M and its radius is R.
We = G x M x m/R2
Wm = G x 7.36 x 1022 kg x m / (1.74 x 106 m)2
Wm = 2.431 x 1010 G x m i.
We = 1.474 x 1011 G x m ii.
Dividing both the equations i. & ii.
Wm/We = 1/6
Weight of the object on the moon / Weight of the object on the earth = 1/6
Weight of the object on the moon = (1/6) × its weight on the earth.
Posted by Alok Kumar Kumar 5 years, 6 months ago
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Kushangi ..... 5 years, 6 months ago
Sandeep Muduli 5 years, 6 months ago
Posted by Chhaya Gangwar 5 years, 6 months ago
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Meghna Thapar 5 years, 5 months ago
Johannes Kepler was a 16th century astronomer who established three laws which govern the motion of planets around the Sun, known as Kepler’s laws of planetary motion. These are:
- Kepler's First Law states that the planets move around the Sun in elliptical orbits, with the Sun at one of the two foci of the elliptical orbit.
- Kepler's Second Law states that in an elliptical orbit of the planet, the line joining the centre of the planet to the centre of the Sun sweeps out equal areas in equal intervals of time.
- Kepler’s Third Law states that the cube of the mean distance ‘r’ of a planet from the Sun is directly proportional to the square of its orbital period 'T'.
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Sughar Singh Jat 5 years, 6 months ago
1Thank You