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A particles is moving along a straight line with constent acceleration . at the end of tenth second its velocity becomes 20 m/s and in tenth second it travels a distance of 10 m . then the acceleration of the particle will be
Posted by Satyam Singh (Aug 19, 2017 4:38 p.m.) (Question ID: 13537)

What is the syllabus of sa1
Posted by Snigdha Banerjee (Aug 19, 2017 2:25 p.m.) (Question ID: 13455)

Find the dimension of relative density?
Posted by Arnav Singh (Aug 19, 2017 1:47 p.m.) (Question ID: 13433)

• Bcoz density = mass Vol
Answered by Mozammil Alam (Aug 19, 2017 2:19 p.m.)
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• ML-³
Answered by Mozammil Alam (Aug 19, 2017 2:18 p.m.)
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What is parallax
Posted by Bunny Yengkhom (Aug 19, 2017 7:16 a.m.) (Question ID: 13298)

• The effect whereby the position and direction of an object appears to differ when viewed from different position Eg.through camera to viewfinder
Answered by Arnav Singh (Aug 19, 2017 1:45 p.m.)
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• Parallax is a displacement or difference in the apparent position of an object viewed along two different lines of sight, and is measured by the angle or semi-angle of inclination between those two lines.

Answered by Payal Singh (Aug 19, 2017 8:29 a.m.)
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• Parallax is a displacement or difference in the apparent position of an object viewed along two different lines of sight, and is measured by the angle or semi-angle of inclination between those two lines. The term is derived from the Greek word παράλλαξις (parallaxis), meaning "alternation". Due to foreshortening, nearby objects have a larger parallax than more distant objects when observed from different positions, so parallax can be used to determine distances.

To measure large distances, such as the distance of a planet or a star from the earth, astronomers use the principle of parallax. Here, the term "parallax" is the semi-angle of inclination between two sight-lines to the star, as observed when the Earth is on opposite sides of the Sun in its orbit. These distances form the lowest rung of what is called "the cosmic distance ladder", the first in a succession of methods by which astronomers determine the distances to celestial objects, serving as a basis for other distance measurements in astronomy forming the higher rungs of the ladder.

Answered by Himanshu Singhal (Aug 19, 2017 8:19 a.m.)
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What type of force does a protoms exerts on a protons
Posted by Parth Chaudhari (Aug 19, 2017 5:13 a.m.) (Question ID: 13265)

• It's a short range force called the strong force.
Explanation:
As you may know, the proton is not an elementary particle, it is made of three quarks plus a sea of gluons. Gluons are the elementary particles that transmit the strong force. Particles that are sensitive to the strong force carry one of three colors.
The term color here refers to a quantum number that is more like a charge. it is only because there are three strong charges and three fundamental colors that by analogy, the strong charge is called the color. The strong force, unlike the electromagnetic force, is confining. That is a proton cannot be broken in free quarks. These are always bound.
The strong force, at the distances of the order of the proton radius, is 60 times stronger than the electromagnetic force

Answered by Himanshu Singhal (Aug 19, 2017 8:45 a.m.)
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Why is frictional force = Normal reaction
Posted by Lalit Tiwari (Aug 18, 2017 11:19 p.m.) (Question ID: 13236)

• At some cases frictional force should be equal to the weight of the body to keep it stationary at a point.Since weight of the body = normal reaction Therefore frictional force = Normal reaction
Answered by Rk Gothwal (Aug 19, 2017 10:13 a.m.)
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How to change the values of given SI units quickly without any hesitation or etc. Ex.1 atm = 76 cm or 760 hg.
Posted by Abhishek Nigam (Aug 18, 2017 10:33 p.m.) (Question ID: 13202)

What is unit vector
Posted by Abhishek Kushwaha (Aug 18, 2017 9:42 p.m.) (Question ID: 13160)

• The term direction vector is used to describe a unit vector being used to represent spatial direction, and such quantities are commonly denoted as d.
Answered by Deepti Rajput (Aug 19, 2017 9:31 a.m.)
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Is it possible to add two vector of unequal magnitude and get zero?
Posted by Preeti Singh (Aug 18, 2017 9:24 p.m.) (Question ID: 13144)

• No, it is not possible.
Answered by Abhishek Kushwaha (Aug 18, 2017 9:44 p.m.)
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Centre of gravity
Posted by Anushka Sharma (Aug 18, 2017 7:13 p.m.) (Question ID: 12943)

• It is a point from which the weight of a body or system may be considered to act. In uniform gravity, it is the same as the centre of mass.

Answered by Arun Soni (Aug 18, 2017 7:24 p.m.)
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A star is located 9 light years away from us what is its distance in parsec what is the parallel shown by its star when viewed from 2 location 3×10^11m a part the given parsec is equal to 3.084×10^16m 1lightyear =9.46×10^15
Posted by Kavi Bharathi (Aug 18, 2017 7:04 p.m.) (Question ID: 12931)

Vectors
Posted by Nitin Yadav (Aug 18, 2017 6:55 p.m.) (Question ID: 12913)

• Vector is a physical quantity that has both magnitude and direction. It is typically represented by an arrow whose direction is the same as that of the quantity and whose length is proportional to the quantity's magnitude.

Answered by Arun Soni (Aug 18, 2017 7:02 p.m.)
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Resolution of vector
Posted by Ratan Saroj (Aug 18, 2017 1:26 p.m.) (Question ID: 12736)

• When a vector is splited into two or more vector in such a way that their resultant vector is equal to the component of resultant of a vector Eg ,(15N=2N+5N+7N+1N) vector
Answered by Arnav Singh (Aug 18, 2017 6:04 p.m.)
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A particle is projected vertically upward from ground level with a speed of 50m/s . for how long will it be more than 70m above the ground?
Posted by Ravi Kumar (Aug 18, 2017 11:52 a.m.) (Question ID: 12726)

What is the theory of relativity
Posted by Deepanshu Rohilla (Aug 18, 2017 9:19 a.m.) (Question ID: 12681)

• Albert Einstein, in his theory of special relativity, determined that the laws of physics are the same for all non-accelerating observers, and he showed that the speed of light within a vacuum is the same no matter the speed at which an observer travels.

Albert Einstein's general theory of relativity is one of the towering achievements of 20th-century physics. Published in 1916, it explains that what we perceive as the force of gravity in fact arises from the curvature of space and time. Einstein proposed that objects such as the sun and the Earth change this geometry.

Special relativity is a theory proposed by Albert Einstein that describes the propagation of matter and light at high speeds. ... Special relativity reduces to Newtonian mechanics in the limit of small speeds. According to special relativity, no wave or particle may travel at a speed greater than the speed of light c.

Answered by Dr Pathikrt Banerjee (Aug 18, 2017 9:40 a.m.)
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What is unit?
Posted by Sanswrang Goyary (Aug 18, 2017 7 a.m.) (Question ID: 12655)

• The standard used for measurement is known as unit
Answered by Arnav Singh (Aug 18, 2017 6:06 p.m.)
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• A unit of measurement is a definite magnitude of a quantity, defined and adopted by convention or by law, that is used as a standard for measurement of the same quantity.Any other value of that quantity can be expressed as a simple multiple of the unit of measurement.

For example, length is a physical quantity. The metre is a unit of length that represents a definite predetermined length. When we say 10 metres (or 10 m), we actually mean 10 times the definite predetermined length called "metre".

Answered by Himanshu Singhal (Aug 18, 2017 7:04 a.m.)
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What is integration
Posted by Pawan Singh (Aug 18, 2017 6:04 a.m.) (Question ID: 12640)

• In mathematics, an integral assigns numbers to functions in a way that can describe displacement, area, volume, and other concepts that arise by combining infinitesimal data. Integration is one of the two main operations of calculus, with its inverse, differentiation, being the other

Answered by Himanshu Singhal (Aug 18, 2017 7:22 a.m.)
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What is axliration
Posted by Hemant Kumar Dass (Aug 18, 2017 12:44 a.m.) (Question ID: 12625)

• Acceleration, in physics, is the rate of change of velocity of an object with respect to time. An object's acceleration is the net result of any and all forces acting on the object, as described by Newton's Second Law. The SI unit for acceleration is metre per second squared (m s−2). Accelerations are vector quantities (they have magnitude and direction) and add according to the parallelogram law. As a vector, the calculated net force is equal to the product of the object's mass (a scalar quantity) and its acceleration.

Answered by Himanshu Singhal (Aug 18, 2017 7:32 a.m.)
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Formula for differentiation
Posted by Juli Kumari (Aug 17, 2017 11:51 p.m.) (Question ID: 12611)

What is physice
Posted by Deepak Kumar (Aug 17, 2017 10:59 p.m.) (Question ID: 12579)

• How to learn all formulas of trigonometry
Posted by Prateek Mishra (Aug 17, 2017 11:10 p.m.)
• Physics is the natural science that involves the study of matter and its motion and behavior through space and time, along with related concepts such as energy and force.

Answered by Arun Soni (Aug 18, 2017 4:06 a.m.)
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Projectile motion and equation
Posted by Maha Baskaran (Aug 17, 2017 9:45 p.m.) (Question ID: 12508)

What is physics
Posted by Gourav Singi (Aug 17, 2017 8:39 p.m.) (Question ID: 12391)

• Physics is the science of measurements. It deals with the study of various natural phenomena and is considered as the most fundamental branch of science.
Posted by Anchal Thakur (Aug 17, 2017 9:39 p.m.)
• Physics is a branch of science which is devoted to the study of nature and natural phenomenon.It is the science of measurement
Answered by Arnav Singh (Aug 17, 2017 9:13 p.m.)
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• the branch of science concerned with the nature and properties of matter and energy. The subject matter of physics includes mechanics, heat, light and other radiation, sound, electricity, magnetism, and the structure of atoms.

Answered by Soumya Ghoshal (Aug 17, 2017 8:45 p.m.)
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• Physics is the branch of science deals with nature and natural phenomenon
Answered by Gourav Singi (Aug 17, 2017 8:41 p.m.)
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How we can solve banking of road types of questions
Posted by Arvind Dora (Aug 17, 2017 7:58 p.m.) (Question ID: 12329)

observation of exp 1 vernier callipers
Posted by Anu Verma (Aug 17, 2017 7:47 p.m.) (Question ID: 12312)

• observation of exp no 1 vernier callipers
Posted by Anu Verma (Aug 17, 2017 7:49 p.m.)
why is instantaneous speed equal to instantaneous velocity ?
Posted by Mohd Ansab (Aug 17, 2017 7:38 p.m.) (Question ID: 12301)

The experiment of vernier calliper
Posted by Ashutosh Bisaria (Aug 17, 2017 7:29 p.m.) (Question ID: 12290)

A projectile is projected with an initial velocity of 6ivector+8jvector m/s then calculate it's horizontal range
Posted by Shivam Jha (Aug 17, 2017 7:13 p.m.) (Question ID: 12269)

What is the si unit of velocity
Posted by Dharmendra Kumar (Aug 17, 2017 7:05 p.m.) (Question ID: 12264)

• m/sec
Answered by Abhishek Tiwari (Aug 17, 2017 7:08 p.m.)
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loge mn
Posted by Guleria Saab (Aug 17, 2017 7:01 p.m.) (Question ID: 12260)

Trajectory
Posted by Sunil Gurjar (Aug 17, 2017 6:50 p.m.) (Question ID: 12251)