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Check the correction of given equation using dimensions v=πpr4÷8√l

Posted by Neelu.S Rawoor 7 years, 4 months ago

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Agar bowler ne 142.6 km\h se bowl deliver ki h toh batsmen ka pass kitni speed se jayge (if pich is assumed to be slightly moisture)

Posted by Vansh Sharma 7 years, 4 months ago

CBSE > Class 11 > Physics

0 answers

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A particle is moving with velocity 10 meter per second in direction of east and after some time it turn in direction of north without change speed then find it resultant velocity and change velocity

Posted by Surbhi Awasthi 7 years, 4 months ago

CBSE > Class 11 > Physics

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What is magnjtude

Posted by Alankrita Sricastava 5 years, 8 months ago

CBSE > Class 11 > Physics

1 answers

Surbhi Awasthi 7 years, 4 months ago

Its mean size and it spelling may be magnitude

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If a=-i,+j+k ,b=2i+3j+5k , then find sine of angle between a and b

Posted by Shrushti Bora 7 years, 4 months ago

CBSE > Class 11 > Physics

0 answers

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Relation between protons neutrons and electrons

Posted by Divya Thakur 7 years, 4 months ago

CBSE > Class 11 > Physics

3 answers

Surbhi Awasthi 7 years, 4 months ago

I think relation may be atomic no. Equal proton equal electron and atomic mass minus atomic no. Equal neutron

1Thank You

Mradul Goyal 7 years, 4 months ago

Sorry in this ans has some mistake right ans is all threes are made up by a atom nd the charge of electron and proton are exactly same but these are opposite nd then opposite charge attract protons and elctrons

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Mradul Goyal 7 years, 4 months ago

All threes are made up by a atom nd proton nd elctron have same charge but these are opposite nd proton and neutron are making up the nucleus

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If the distance are 55m& 105 m travelled in 5th sec & 10th sec of time respectively. Find the distance travelled in 30th sec?

Posted by Komal Kumari 7 years, 4 months ago

CBSE > Class 11 > Physics

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A body covers a circular pathof radius r in 20 seconds calculate the distance and displacement of body end of 70 seconds

Posted by Nitesh Mehto 7 years, 4 months ago

CBSE > Class 11 > Physics

0 answers

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when two right angles vectors of magnitude 7 units and 24 units combine what is the magnitude of their resultant

Posted by M Krishna 7 years, 4 months ago

CBSE > Class 11 > Physics

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Define triangle law of addition and parallelogram law of addition with derivation

Posted by Ans Ria Ros 7 years, 4 months ago

CBSE > Class 11 > Physics

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The velocity of a car increases uniformly from 5m/h when it travel 50m find the acceleration of the car

Posted by Himanshu Kumar Chahar 7 years, 4 months ago

CBSE > Class 11 > Physics

1 answers

Charu Vatsal 7 years, 4 months ago

Acceleration = velocity /time

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If the acceleration due to gravity is 10 m/s^2 and the units of length and time are changed in kilometer and hour respectively, the numerical value of the acceleration is............. .

Posted by Shrishti Bhagat 7 years, 4 months ago

CBSE > Class 11 > Physics

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Dimensional formula of relative density

Posted by Shrishti Bhagat 7 years, 4 months ago

CBSE > Class 11 > Physics

1 answers

Charu Vatsal 7 years, 4 months ago

May be ML*-3

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A boy is running over a circular track with uniform speed of the 10m/s find the average velocity for movement of body from A to B?

Posted by Meet Tyagi 7 years, 4 months ago

CBSE > Class 11 > Physics

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Briefly explain the working of hydraulic lift

Posted by Akash K A 7 years, 4 months ago

CBSE > Class 11 > Physics

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If force act perpendicular to the direction of motion.what is the amout of workdone

Posted by Tushar Dewangan 7 years, 4 months ago

CBSE > Class 11 > Physics

1 answers

Meet Tyagi 7 years, 4 months ago

The amount of workdone will be 0 bcuz angle become 90degree

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If Z is equal to the multiplication of first five alphabet and their percentage error is according to their order .then calculate the total percentage error

Posted by Dinesh Devasi 5 years, 8 months ago

CBSE > Class 11 > Physics

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How speed of light calculated

Posted by Geetesh Rathore 7 years, 4 months ago

CBSE > Class 11 > Physics

5 answers

Nancy Rajput 7 years, 4 months ago

The speed of light in a vacuum is 186,282 miles per second (299,792 kilometers per second), and in theory nothing can travel faster than light. In miles per hour, light speed is, well, a lot: about 670,616,629 mph. If you could travel at the speed of light, you could go around the Earth 7.5 times in one second. Early scientists, unable to perceive light’s motion, thought it must travel instantaneously. Over time, however, measurements of the motion of these wave-like particles became more and more precise. Thanks to the work of Albert Einstein and others, we now understand light speed to be a theoretical limit: light speed — a constant called "c" — is thought to be not acheivable by anything with mass, for reasons explained below. That doesn’t stop sci-fi writers, and even some very serious scientists, from imagining alternative theories that would allow for some awfully fast trips around the universe.

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Demons King 7 years, 4 months ago

Us book me ye 3 ke bare me parhna hai

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Demons King 7 years, 4 months ago

Léon Foucault used an experiment which used rotating mirrors to obtain a value of 298,000,000 m/s in 1862. Albert A. Michelson conducted experiments on the speed of light from 1877 until his death in 1931. He refined Foucault's methods in 1926 using improved rotating mirrors to measure the time it took light to make a round trip from Mt. Wilson to Mt. San Antonio in California. The precise measurements yielded a speed of 299,796,000 m/s.

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Demons King 7 years, 4 months ago

more accurate, measurement of the speed of light was performed in Europe by Hippolyte Fizeau in 1849. Fizeau directed a beam of light at a mirror several kilometers away. A rotating cog wheel was placed in the path of the light beam as it traveled from the source, to the mirror and then returned to its origin. Fizeau found that at a certain rate of rotation, the beam would pass through one gap in the wheel on the way out and the next gap on the way back. Knowing the distance to the mirror, the number of teeth on the wheel, and the rate of rotation, Fizeau was able to calculate the speed of light as 313,000,000 m/s.

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Demons King 7 years, 4 months ago

Galileo attempted to measure the speed of light in the seventeenth century. An early experiment to measure the speed of light was conducted by Ole Rømer, a Danish physicist, in 1676. Using a telescope, Ole observed the motions of Jupiter and one of its moons, Io. Noting discrepancies in the apparent period of Io's orbit, Rømer calculated that light takes about 22 minutes to traverse the diameter of Earth's orbit.[4] Unfortunately, its size was not known at that time. If Ole had known the diameter of the Earth's orbit, he would have calculated a speed of 227,000,000 m/s

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How is speed of light calculated?(give the experiment)

Posted by Demons King 7 years, 4 months ago

CBSE > Class 11 > Physics

7 answers

Demons King 7 years, 4 months ago

Bhai me commerce student hu

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Geetesh Rathore 7 years, 4 months ago

Iwill try

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Demons King 7 years, 4 months ago

Last chapter from concepts of physics part 1

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Geetesh Rathore 7 years, 4 months ago

Kya samaj me ayega bina parhe sahi bola yr

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Demons King 7 years, 4 months ago

Koi nhi parha hoga sayad se 3 experiment diya hai

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Demons King 7 years, 4 months ago

Bhai last chapter parh ke dekh le

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Geetesh Rathore 7 years, 4 months ago

Gjb ka question hi i too want ans

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What is the conservation of linear moment

Posted by Mradul Goyal 7 years, 4 months ago

CBSE > Class 11 > Physics

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Dimensional formula of calorie is ML2T-2 . what is si unit of M,L,T

Posted by Yuvi Chauhan 7 years, 4 months ago

CBSE > Class 11 > Physics

3 answers

Mradul Goyal 7 years, 4 months ago

The SI unit of M,L,T is kg metre squre per second squre

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Bikash Banerjee 7 years, 4 months ago

S. I. Unit is M for kilogram, L for metre, T for second

1Thank You

Bikash Banerjee 7 years, 4 months ago

M- mass L- lenght T- time

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A body is projected with a velocity 30m/s and makes an vertical angle 30 degree calculate its range

Posted by Diwakar Singh 7 years, 4 months ago

CBSE > Class 11 > Physics

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What is law of conservation of enegy

Posted by Sukhman Singh 7 years, 4 months ago

CBSE > Class 11 > Physics

1 answers

Munjal Suryawala 7 years, 4 months ago

Law of concervation of energy states that energy cannot be created and nor be destroyed, but can be changed from 1 form to another EXAMPLE when you push your friend your energy gets converted in form of force on your friends's body.

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Derive the equations for motion using graphical method

Posted by M D Vaishnavi Vaishnavi 7 years, 4 months ago

CBSE > Class 11 > Physics

4 answers

Priya Dharshini ? 7 years, 4 months ago

It is there in class 9th ncert or u can check in google u will get detail answer in best way

1Thank You

Tapan Pandey 7 years, 4 months ago

I can't derive it here by graphical method

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Nishita Tomar 7 years, 4 months ago

Aapne kholi h kya kbhi???

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I Am Boss 7 years, 4 months ago

Kabhi book khol liya karo

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What is frame reference

Posted by Shivom Panwar 7 years, 4 months ago

CBSE > Class 11 > Physics

1 answers

Priya Thakur 7 years, 4 months ago

a frame of reference (or reference frame)consists of an abstract coordinate system and the set of physical reference points that uniquely fix (locate and orient) the coordinate system and standardize measurements.

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Unit test 1 question paper 2018

Posted by Diksha Pandey Diksha 7 years, 4 months ago

CBSE > Class 11 > Physics