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a ballon going upward with a speed of 120m/s drop a mass of 2kg when the balloon reaches at 600m from the ground what time will the mass take to reach to ground ?

Posted by Arshdeep Singh 7 years, 10 months ago

CBSE > Class 11 > Physics

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The car with a speed of 50 km/h can be stopped by brakes at last 6m. What is the minimum stopping distance of the car if the car is moving at a speed of 100km/h

Posted by Snefin Reji 7 years, 10 months ago

CBSE > Class 11 > Physics

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What provides the centripetal force to a car taking a turn on a level road?

Posted by Snefin Reji 7 years, 10 months ago

CBSE > Class 11 > Physics

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How does the kinetic energy of the body changes if it's momentum is doubled?

Posted by Snefin Reji 7 years, 10 months ago

CBSE > Class 11 > Physics

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Prove that the magnitude of the ratio of the difference in speeds after collision to the difference in speeds before collision for one dimensional elastic closedown equal to one .

Posted by Vikash Raj 7 years, 10 months ago

CBSE > Class 11 > Physics

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Best books for pcm subject for class 12

Posted by Ritik Pal 7 years, 10 months ago

CBSE > Class 11 > Physics

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What's epuillibrium

Posted by Rishika Gupta 7 years, 10 months ago

CBSE > Class 11 > Physics

1 answers

Himanshu Tiwari 7 years, 10 months ago

Equilibrium is dead state won the rate of backward and forward reaction are equal

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What is rigidit y

Posted by Abhi Nigam 7 years, 10 months ago

CBSE > Class 11 > Physics

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Why the density of water is maximum at 4 degree c

Posted by Tushar Bonia 7 years, 10 months ago

CBSE > Class 11 > Physics

1 answers

Complicated Life 7 years, 10 months ago

When the ice melts to liquid water the structure collapse and the density of the liquid increase. At temperature well above freezing the molecular move faster and get further apart the density as temperature increases thus the density of water is maximum 4 degree c

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State the condition for the formation of stationary wave.

Posted by Aman Singh 7 years, 10 months ago

CBSE > Class 11 > Physics

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What is gravitation constant

Posted by Daman Bindal 7 years, 10 months ago

CBSE > Class 11 > Physics

1 answers

Jaya Verma 7 years, 10 months ago

Gravitational force of attraction, F depends upon ratio of the product of mass of heavier body(M) and mass of lighter body(m) & square of the distance between them (r^2). So, F=GMm/ r^2 where G is the gravitational constant. ?

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Simple pendulum

Posted by Deependra Singh 7 years, 10 months ago

CBSE > Class 11 > Physics

2 answers

Deependra Singh 7 years, 10 months ago

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Mohd Ashar Khan 7 years, 10 months ago

A simple pendulum is a pendulum which moves in to and fro motion.

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Total energy of a particle moving in a horizontal circle?

Posted by Priya Rawat 7 years, 10 months ago

CBSE > Class 11 > Physics

1 answers

Diwakar Patel 7 years, 10 months ago

Root over 5gr

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What is Tensile stress?

Posted by Anamika Singh 7 years, 10 months ago

CBSE > Class 11 > Physics

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Three athletes A,B,C throw their javelins from similar position with same initial speeds making angle 30degree ,45degree,60degreewith horizontal 1)out of three athletes which one is wiser than other two? 2)give a condition for maximum horizontal range of a projectile 3) prove that maximum horizontal range is four times the maximum height attained by the projectile when fired at inclination so as to have maximum horizontal range

Posted by Kalai Arasi 7 years, 10 months ago

CBSE > Class 11 > Physics

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What is the work done by the tension in the string of a simple pendulum? Justify also.

Posted by Raghv Shekhawat 7 years, 10 months ago

CBSE > Class 11 > Physics

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A boy stands at 39.2m from a building and throws a ball which just passes through a window 19.6m above the ground. Calculate the velocity of projection of the ball.

Posted by Mr. Mohit Kumar Singh 7 years, 10 months ago

CBSE > Class 11 > Physics

1 answers

Aaradhya Khanduja 5 years, 5 months ago

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An object of mass 12 kg at a certain height above the ground . If the P.E. of the object is 400J find height at which the object is on the ground (g=10m/s^2)

Posted by Mansi Sharma 7 years, 10 months ago

CBSE > Class 11 > Physics

1 answers

Shubham Gupta 7 years, 10 months ago

Since PE =mgh Where ,h=height m=mass g =10 Therefore ,400=12×10×h h= 400/12×10 h= 3.33m

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Bernoulli theorem article

Posted by Harpinder Kaur 7 years, 10 months ago

CBSE > Class 11 > Physics

2 answers

Manish Yadav 7 years, 10 months ago

The sun of pressure energy ,kinetic energy and potential energy per unit volume is always constant.

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Ankush Sharma 7 years, 10 months ago

Total energy that is potential energy, kinetic energy and pressure energy is always constant for a stream line flow

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Graph of a freely failing body under acceleration time graph.

Posted by Manish Yadav 7 years, 10 months ago

CBSE > Class 11 > Physics

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Hytrogen leaked easily then oxygen with hole

Posted by Abhishek Kumar 7 years, 10 months ago

CBSE > Class 11 > Physics

2 answers

Shweta Bhardwaj 7 years, 10 months ago

But why he ask reason

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Ahtasham Jamal 7 years, 10 months ago

Oxygen

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Definition, advantages and characteristics of SI unit

Posted by Shubhangi Sharma 7 years, 10 months ago

CBSE > Class 11 > Physics

3 answers

Deependra Singh 7 years, 10 months ago

It's International system not system international

0Thank You

Shweta Bhardwaj 7 years, 10 months ago

Si unit means system international

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Shweta Bhardwaj 7 years, 10 months ago

It is a coherent system of unit ..It is a absolute system of unit.there r no gravitational unit on the system

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Dhzg sgx djvz sgc rthsh gyyj

Posted by Nikhil Sahu 7 years, 10 months ago

CBSE > Class 11 > Physics

1 answers

Shweta Bhardwaj 7 years, 10 months ago

R u mad

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A body initially in rest , is release from the top of a tower of height 27m .It take s 'T' seconds to reach the ground .Find the height of the ball,above the ground ,at t= T/3

Posted by Aishwariya Mohanty 7 years, 10 months ago

CBSE > Class 11 > Physics

1 answers

Prashant Kumar 7 years, 10 months ago

18 metre if g is 10

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If a liquid drop of diameter 4mm breaks into thousand droplets of equal size ,calculate the resultant change in surface energy .the surface tension of the liquid is 0.07Nm-1

Posted by Donald Baite 7 years, 10 months ago

CBSE > Class 11 > Physics

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At what temperature efficiency of carnot engine is 100%?

Posted by Cbse Classes 7 years, 10 months ago

CBSE > Class 11 > Physics

1 answers

Himanshu Tiwari 7 years, 10 months ago

When T2 is 0

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Define radius of gyration and an expression for it

Posted by Ashutosh Tiwari 7 years, 10 months ago

CBSE > Class 11 > Physics

1 answers

Himanshu Tiwari 7 years, 10 months ago

Distance from the centre of mass to the point where you are calculating the answer is called radius of gyration and as we know inertia is equals to product of mass and radius of gyration square so by placing radius of gyration at the side we can get the expression for it that is under root I upon m that is it thank you

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A box contains equal number of molecules of hydrogen and oxygen.If there is a fine hole in the box, which gas will leak more rapidly?

Posted by Ritesh Ritick 7 years, 10 months ago

CBSE > Class 11 > Physics