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Ask QuestionPosted by Taisim Shaikh 5 years, 4 months ago
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Posted by Hanmant Bajgire 5 years, 4 months ago
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Yogita Ingle 5 years, 4 months ago
When an object changes its position with elapse of time in respect to a stationary object, such as a building, electric pole, etc., the object is said to be in motion.
Posted by Gokul Jadhav 5 years, 4 months ago
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Yogita Ingle 5 years, 4 months ago
Gravitation is the force of attraction between any two bodies. All the objects in the universe attract each other with a certain amount of force, but in most of the cases, the force is too weak to be observed due to the very large distance of separation. This force of attraction was first observed by Sir Isaac Newton and was presented as Newton’s law of gravitation in the year 1680.
Posted by Shaik Mohameed 5 years, 4 months ago
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Posted by Mayank Sahu 5 years, 4 months ago
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Yogita Ingle 5 years, 4 months ago
Van de graaff generator is used to generate high voltages of the order of a few million volts. This results in generation of large electric fields for experimental purposes.
Principle
- The inner sphere has a higher potential than outer if the charge q is positive.
- If the two spheres are connected through a wire, the charge will flow from high to low potential.
- Thus, providing smaller potentials at the inner sphere will keep building large amount of charge at the outer sphere, till the breakdown field of air (3 x 106 V/m) is reached.
- This accumulates close to millions of volts.
Posted by S A A 5 years, 4 months ago
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Jatin Gupta 5 years, 3 months ago
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Gaurav Seth 5 years, 4 months ago
Question: A block of mass 5kg is at rest on a smooth horizontal surface.wter coming out of pipe horizontally at the rate 2 kg s, hits the block with a velocity of 6 ms.the initial acceleration of the block is?
Ans:
Given,
m = 5 kg
rate of water (dm/dt) = 2 kg/sec
We know that,
Posted by Sunny Kumar 5 years, 4 months ago
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Karan Jethwani 4 years, 7 months ago
Posted by Shubham Singh 5 years, 4 months ago
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Prakash Patidar 5 years, 3 months ago
Madni Doi 5 years, 4 months ago
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Baibhav Bohidar 5 years, 4 months ago
Posted by Rubina Parveen 5 years, 4 months ago
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Anurag Chaturvedi 5 years, 2 months ago
Posted by Rimeki Lyngdoh Mawphlang 5 years, 4 months ago
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Deepak Gupta 5 years, 4 months ago
Posted by Murugan Duraisamy 5 years, 4 months ago
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Yogita Ingle 5 years, 4 months ago
The SI unit of pressure is Pascal (represented as Pa) which is equal to one newton per square metre (N/m-2 or kg m-1s-2).
The CGS unit of pressure is barye (Ba), equal to 1 dyn·cm−2, or 0.1 Pa.
Posted by Phutin Duat 5 years, 4 months ago
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Posted by Ankit Chauhan 5 years, 4 months ago
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Gaurav Seth 5 years, 4 months ago
A block of mass m is suspended by a light thread from an elevator. the elevator is accelerating upward with uniform acceleration ‘a’.
we know, Newton's law doesn't valid in non-inertial frame of reference. so, we have to add Psuedo force just opposite direction of it motion to make inertial frame of reference.
so, tension in the thread = mg + ma→ [ Psuedo force]
tension = m(g + a)
now, we have to find displacement of elevator.
use formula, S = ut + 1/2 At²
here A is net acceleration acts on elevator.
here u = 0, A = a [ upward direction]
so, S = 0 + 1/2 at²
hence, displacement is 1/2at²
now, workdone = Tension × displacement
= m(g + a) × 1/2 at²
= 1/2 m(g + a)at² Joule
Posted by Chandan Debnath 5 years, 4 months ago
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Posted by Ayushi Piparsaniya 5 years, 4 months ago
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Posted by Tushar Gupta 5 years, 4 months ago
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Mehta Khushal 5 years, 4 months ago
Nihal Ahmad Chaudhary 5 years, 4 months ago
Posted by Himansu Behera 5 years, 4 months ago
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Monika Chauhan 5 years, 4 months ago
Yogita Ingle 5 years, 4 months ago
The energy required to remove an electron from a neutral isolated gaseous stom and convert it into a positively charged gaseous ion is called ionisation energy or first ionisation energy.
Ionisation energy required to remove the second electron from a monovalent cation is called second ionization energy.
Similarly, the energy required to remove the third electron from a divalent cation is called the third ionisation energy.
Posted by Sunitha Kushi 5 years, 4 months ago
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Posted by Afsana Afrin 5 years, 4 months ago
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