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Posted by Pratik Kumar Pal 1 year, 3 months ago

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Nishat Hasan 1 year, 1 month ago

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5.74g of a substance occupies 1.2cm³.express it's density by keeping the significant figures in the views

Posted by Parveen Kumar 1 year, 3 months ago

Jharkhand Board > Class 11 > Physics

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Which are the main topics in physical world

Posted by Ashish Namata 1 year, 7 months ago

Jharkhand Board > Class 11 > Physics

2 answers

Nishat Hasan 1 year, 1 month ago

Pta h

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Pratik Kumar Pal 1 year, 3 months ago

Nhi pta

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Define work

Posted by Shankar Pandey Pandey 1 year, 7 months ago

Jharkhand Board > Class 11 > Physics

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Preeti Dabral 1 year, 7 months ago

A work is done when something is moved through a distance or when a moving object is brought to rest or when it changes the direction of motion.

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A thermodynamics system releases 20 J of heat when 8 J of work done on it.if the initial temperature of internal energy of the system be 30 J. Then what will be its final internal energy

Posted by Sima Roy 1 year, 10 months ago

Jharkhand Board > Class 11 > Physics

2 answers

Piyush Ranjan 1 year, 7 months ago

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Aditya Verma 1 year, 9 months ago

Solution

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What is hooks law

Posted by Divya Divya Rani 1 year, 10 months ago

Jharkhand Board > Class 11 > Physics

1 answers

Preeti Dabral 1 year, 10 months ago

Hooke's law, law of elasticity discovered by the English scientist Robert Hooke in 1660, which states that, for relatively small deformations of an object, the displacement or size of the deformation is directly proportional to the deforming force or load.

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If the displacement of a body is (400+10)metres and time taken by it is(40+0.4) second then find the percentage error in the measurement of velocity?

Posted by Knowledge Everything 2 years, 2 months ago

Jharkhand Board > Class 11 > Physics

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Munna Giri 7 months ago

To find the percentage error in the measurement of velocity, we first need to calculate the velocity using the given displacement and time. Given: Displacement = 400 + 10 = 410 meters Time = 40 + 0.4 = 40.4 seconds Velocity = Displacement / Time = 410 meters / 40.4 seconds ≈ 10.1386 meters per second Now, we can calculate the percentage error in the measurement of velocity. To do this, we need to consider the errors in both displacement and time. Let's assume the errors in displacement and time are Δd and Δt respectively. Then: Percentage error in velocity = [(Δd/d) + (Δt/t)] * 100% Given: Δd = 10 meters (since the error in displacement is 10 meters) Δt = 0.4 seconds (since the error in time is 0.4 seconds) Percentage error in velocity = [(10/410) + (0.4/40.4)] * 100% ≈ [(0.0244) + (0.0099)] * 100% ≈ 0.0343 * 100% ≈ 3.43% So, the percentage error in the measurement of velocity is approximately 3.43%.

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What is difference between distance and displacement ?

Posted by Arti Kumari 2 years, 2 months ago

Jharkhand Board > Class 11 > Physics