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Ask QuestionPosted by Shrijeet Sharma 6 years ago
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Yogita Ingle 6 years ago
From air- oxygen and nitrogen
From water - Hydrogen and minerals...
Posted by Suraj Sharma 6 years ago
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Yogita Ingle 6 years ago
When a body moves along a straight line path, its motion is said to be one-dimensional motion.
Posted by Kusum Lata 6 years ago
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Anish Kumar 6 years ago
Gaurav Seth 6 years 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 6 years ago
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Anish Kumar 6 years ago
Posted by Dev King 6 years ago
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Meghna Thapar 6 years ago
The production of gas in the tissues or organs of the body is called aerosis.
Posted by Babli Singh 6 years ago
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Siddharth Ahluwalia 6 years ago
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Mohinderjeet Singh 6 years ago
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Posted by Partha Saikia 6 years ago
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Meghna Thapar 6 years 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 6 years ago
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Pankaj Goswami 6 years ago
Posted by Amar Sinha 6 years ago
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Meghna Thapar 6 years 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 6 years ago
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Khushi Gadhavi 6 years ago
Bro . 6 years ago
Efat Naaz 6 years ago
Himanshu Kumar 6 years ago
Posted by Sutha Selvi 6 years ago
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Posted by Pal Pathak 6 years ago
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Kavya Kavya 6 years ago
Bro . 6 years ago
Posted by Ravi Ranjan 6 years ago
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Posted by Joking Viedeos Jyoti 6 years ago
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Yogita Ingle 6 years ago
Phylum to which they belong:
1) Cockroach - Arthropoda.
2) Earthworm - Annelida.
Posted by Kushangi ..... 6 years ago
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Pankaj Goswami 6 years ago
Posted by Rohan Chaudhary 6 years ago
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Bro . 6 years ago
Yogita Ingle 6 years 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 6 years ago
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Posted by Hargun Singh 6 years ago
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Bro . 6 years ago
Posted by Mahendra Pratap Singh 6 years ago
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Pankaj Goswami 6 years ago
Posted by Bhomic Roy 6 years ago
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Bro . 6 years ago
Kushangi ..... 6 years ago
Posted by Kamal Khakhodiya 6 years ago
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Pankaj Goswami 6 years ago
Posted by Ujjwal Kant 6 years ago
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Posted by Ujjwal Kant 6 years ago
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Meghna Thapar 6 years 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 6 years ago
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Kushangi ..... 6 years ago
Sandeep Muduli 6 years ago
Posted by Chhaya Gangwar 6 years ago
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Meghna Thapar 6 years 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 6 years ago
1Thank You