CBSE > Class 11 > Physics | CBSE Board | Homework Help

When a truck moves very fast, it created a low pressure area, so dusts are being pulled along in the low pressure area. If we stand very close to railway track in the platform, when a fast train passes us, we get pulled towards the track because of the low pressure area generated by the sheer speed of the train. Enjoy ?

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Dimension of k/m k is force costant

Posted by Ddh Nd 2 years, 9 months ago

CBSE > Class 11 > Physics

1 answers

Harmanpreet Kaur 2 years, 9 months ago

Dimension of K=N/m. k/m=Nm-2

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Describe Kepler's law of planetary motion

Posted by ?Shreya.Kamalakar✔️ Naik 2 years, 9 months ago

CBSE > Class 11 > Physics

0 answers

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An electron and a proton are detected in a cosmic ray experiment, the first with kinetic energy 10KeV, and the second with 100KeV. Which is faster, the electron or the proton? Obtain the ratio of their speeds (electron mass =9.11∗10−31kg, Proton mass =1.67∗10−27kg, 1eV=1.60∗10−19J).

Posted by Darshan Patil 2 years, 9 months ago

CBSE > Class 11 > Physics

1 answers

Anjan Karthi 2 years, 9 months ago

KE = 1/2 mv^2. V = √2KE/m.

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Any one can explain log

Posted by Kunal Kishore 2 years, 9 months ago

CBSE > Class 11 > Physics

1 answers

Karan Frost 2 years, 9 months ago

Class 11 physics practical observation of the relationship between frequency and length of a given wire under constant tension using sonometer

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What is meant by elasticity

Posted by Sadiq Srk Sadiq Srk 2 years, 9 months ago

CBSE > Class 11 > Physics

3 answers

Deepak Kumar Meena 2 years, 7 months ago

Elasticity is a property of material to gain it's its original size after deformation .

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Arti Verma 2 years, 9 months ago

The property of virtue by which a body can regain its original shape and size after the removal of deforming force

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Gurleen Kaur 2 years, 9 months ago

Elasticity is the property of regaining the original configuration after the removal of deforming force.

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E=mc2

Posted by Shubham Prjapati 2 years, 9 months ago

CBSE > Class 11 > Physics

0 answers

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A block whose mass is 1kg is fastened to a spring. The Spring constant of 50Nm

Posted by Vishaliya Feena 2 years, 9 months ago

CBSE > Class 11 > Physics

0 answers

ANSWER

What is the Bernoulli theorem

Posted by Ankit Guha 2 years, 9 months ago

CBSE > Class 11 > Physics

2 answers

Sarthak Dixit 2 years, 8 months ago

I think question is wrong

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Anjan Karthi 2 years, 9 months ago

The total energy within the flow of a non viscous fluid through a tube of non uniform cross section remains a constant at all points inside the tube, even if the points aren't at the same level of height. This is what bernoulli's theorem says. The sum of Pressure energy, Potential energy, kinetic energy = CONSTANT.

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What do you mean by SHM

Posted by Pratibha Kumari 2 years, 9 months ago

CBSE > Class 11 > Physics

2 answers

?Shreya.Kamalakar✔️ Naik 2 years, 9 months ago

Simple Harmonic Motion (SHM)

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Anjan Karthi 2 years, 9 months ago

SHM is the simplest form of oscillatory motion wherein, a body performs to and from motion along a straight line about it's mean position, such that acceleration is directly proportional and opposite in direction to displacement.

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The bob of a pendulum is released from a horizontal position.if the length of the pendulum is 1.5m, what is the speed with which the bob arrives at the lowermost point.given that it dissipated 5%of it initial energy against air resistance?

Posted by Mr Perfect Perfect 2 years, 9 months ago

CBSE > Class 11 > Physics

1 answers

Mr Perfect Perfect 2 years, 9 months ago

a.5.5m/s b.4.7m/s c.5.3m/s d.4.9m/s

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The pressure of a gas is decided by

Posted by Arvinder Singh 2 years, 9 months ago

CBSE > Class 11 > Physics

3 answers

Shreyas Sreenidhi 2 years, 9 months ago

Mass and volume

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Anjan Karthi 2 years, 9 months ago

V , T, concentration.

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Nirbhay Sharma 2 years, 9 months ago

Volume

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A steel wire 10 m long and 10-5 m2 in cross sectional area elongates by 0.01 m under a tension of 2500 N young modulus for steel from this data is computed as

Posted by Anamika Maurya 2 years, 9 months ago

CBSE > Class 11 > Physics

0 answers

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A black body at 500 degree C has a surface area of 0.5m^2 and radiates heat at the rate of 1.02*10^4 j/sec. Calculate the Stefan constant

Posted by Nisha Rai 2 years, 9 months ago

CBSE > Class 11 > Physics

2 answers

Deepak Kumar Meena 2 years, 6 months ago

E is directly proportional to r *4

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Nitin Bokade 2 years, 9 months ago

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What is wave?

Posted by Khusu Prasad 2 years, 9 months ago

CBSE > Class 11 > Physics

1 answers

Gurleen Kaur 2 years, 9 months ago

Wave is a disturbance travelling in a medium which transfers energy and momentum with it.

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A boy pulls a string attached to a wooden blocks with a force of 30N the angle between the string and the horizontal ground is 30° how much is the effective value of the force that tends to move

Posted by Purnadhar Rabha 2 years, 9 months ago

CBSE > Class 11 > Physics

0 answers

ANSWER

State hooke's law reduce the expression for Young's modulus of the material of a length of l radius of cross sectional r and loaded of the mass m producing an expression of delta L

Posted by Kumkum Pandit 2 years, 9 months ago

CBSE > Class 11 > Physics

0 answers

ANSWER

Hi..

Posted by Ronita 🤟 2 years, 9 months ago

CBSE > Class 11 > Physics

5 answers

Ronita 🤟 2 years, 9 months ago

I also don't know how to solve problems in physics.. I'm also having the same problem..

0Thank You

Vijay Surya 2 years, 9 months ago

How to solve problems in physics

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Ronita 🤟 2 years, 9 months ago

Is this app helpful.? If yes , then how much.?

4Thank You

Ronita 🤟 2 years, 8 months ago

For which exam you are preparing ?

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Pankaj Singh 2 years, 8 months ago

1Thank You

ANSWER

Show that the coefficient of area expansion D(A/DT of a rectangular sheet of the solid is twice its liner expansion Alpha

Posted by Niyati Dawar 2 years, 10 months ago

CBSE > Class 11 > Physics

0 answers

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Y=0.5sin6.28t-9.42x find velocity, frequency and wavelength

Posted by Mohit Ram 2 years, 10 months ago

CBSE > Class 11 > Physics

1 answers

Anjan Karthi 2 years, 10 months ago

Time period T = 2π/ω = 2π / 6.28 = 1 sec// F = 1/T = 1 sec^-1// v = Aω cos (ω t + ∅) = 0.5 × 2π cos (2πt - 9.42x)// λ = V / F = 0.5 × 2π cos(2πt + ∅) //

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What is Shearing strain

Posted by Piyush Ranjan 2 years, 10 months ago

CBSE > Class 11 > Physics

2 answers

Arti Verma 2 years, 9 months ago

It is defined as the rate of relative displacement of face ∆x and the length of cylinder L Shar strain =∆x/L

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Pankaj Singh 2 years, 9 months ago

Shearing strain is the measure of the relative displacement of the opposite faces of the body as a result of shearing stress.

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What is compressive stress?

Posted by Piyush Ranjan 2 years, 10 months ago

CBSE > Class 11 > Physics

1 answers

Kartik Sharma 2 years, 9 months ago

It is defined as when we applied a force on cylinder then the height of cylinder is decrease so then stress is Cs=force ( ex) / area

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A ball is thrown upwards with a velocity of 100 m/s. It will reach the ground after what time

Posted by Sana . 2 years, 10 months ago

CBSE > Class 11 > Physics

2 answers

Sumit Pandey 2 years, 9 months ago

T=u/g =100/10

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Anjan Karthi 2 years, 10 months ago

T = 2 (v-u) /a = 2 × -100 / -10 = 20 s. //

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a car starts from rest on a half kilometres long bridge. the coefficient of friction between the tyre and the road is 1.0 . show that the one cannot drive through the bridge is less than 10 s.

Posted by Nishtha Mishra 2 years, 10 months ago

CBSE > Class 11 > Physics

0 answers

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How to work hydroulic lift

Posted by Lokender Sain 2 years, 10 months ago

CBSE > Class 11 > Physics

1 answers

Anjan Karthi 2 years, 10 months ago

A typical hydraulic automobile lift consists of two pistons, one small and other big, connected on two separate ends of a bent tunnel, one end with bigger cross section A2 than other end A1. The organization of components in the system is such that a small force F1 applied on the smaller piston A1 gets multiplied to result in a bigger force at the bigger piston A2 which is connected to the platform where automobiles are placed to be lifted. According to Pascal's law, for any fluid of density D, P1 = P2. F1A1 = F2A2. F2 = A2/A1 × F1 (where, A2/A1 is also known as MECHANICAL ADVANTAGE)

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Why a spinning cricket ball in air does follow a curved path?

Posted by Shradhanjali Behera 2 years, 10 months ago

CBSE > Class 11 > Physics