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Dear asker, rms is root mean speed of the molecules which is different from avg(average) . speed of molecules.There is another term called mps,i.e.Most probable speed Rms=√(3RT/m) Avg speed=√(2RT/m) mps=√(8RT/πm)

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Lakshay Sharma 6 years, 2 months ago

No rms and average are different

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What is Kepler law

Posted by Aju Kumar 6 years, 2 months ago

CBSE > Class 11 > Physics

1 answers

Yogita Ingle 6 years, 2 months ago

Kepler’s 1^st Law: Law of Orbits

Statement: - The orbit of every planet is an ellipse around the sun with sun at one of the two foci of ellipse.

Kepler’s 2^nd law: Law of Areas

Statement:-The line that joins a planet to the sun sweeps out equal areas in equal intervals of time.

Kepler’s 3^rdLaw: Law of periods

Statement: -

According to this law the square of time period of a planet is ∝ to the cube of the semi-major axisof its orbit.

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Find out %error of volume of cylinder if r=4% and h=6%?

Posted by Rashi Upadhya 6 years, 2 months ago

CBSE > Class 11 > Physics

1 answers

Rishi Seth 6 years, 2 months ago

V=πr^2h By differentiating dv/v=2*(dr/r)+(dh/h) Now by multiplying by 100 both side (dv/v)*100=2*(dr/r)*100+(dh/h)*100 %error in v=2*4%+6%=14%

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Explain work energy theorem

Posted by Harman Sandhu 6 years, 2 months ago

CBSE > Class 11 > Physics

3 answers

Udit Varshney 6 years, 2 months ago

W=½v²-½u²

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Shivam Dangwal 6 years, 2 months ago

It states that the work done by an object is the change in kinetic energy of the body i.e. difference in final KE and inital KE. W=1/2mv^2-1/2mu^2 W=1/2m(v^2-u^2) Hope you got the feel of the topic.

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Khushi Rajput 6 years, 2 months ago

Work done by a force on a body is equal to the change in the kinetic energy of the body Let us consider a body of mass M moving with the initial velocity u and when a constant force F is applied on it its velocity become V dw=f×dx dw=m dv/dt × dx dw=mdv(dx/dt) dw=mvdv On integrating |dw=|mvdv W=m |vdv W=m(v2)/2 W=m(v2-u2)/2 W=1/2mv2-1/2mu2

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The slope of velocity time graph represents

Posted by Mohd Anas 6 years, 2 months ago

CBSE > Class 11 > Physics

3 answers

Udit Varshney 6 years, 2 months ago

Accleration

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Gaurav Dubey 6 years, 2 months ago

The slope of velocity and time graph shows acceleration

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Abhishek Singh 6 years, 2 months ago

Acceleration...

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Posted by Vansh Pal 6 years, 2 months ago

CBSE > Class 11 > Physics

1 answers

Richa . 6 years, 2 months ago

Energy

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Explain a easy method for projectile motion and kinatic equations please..

Posted by Renvil R 6 years, 2 months ago

CBSE > Class 11 > Physics

0 answers

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What do you mean by angular velocity and angular displacement. Write the relationship between linear speed and angular speed.

Posted by Aman Pandey 6 years, 2 months ago

CBSE > Class 11 > Physics

2 answers

Aman Pandey 6 years, 2 months ago

What about angular displacement

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Shivam Dangwal 6 years, 2 months ago

Angular velocity is the velocity of the body attained when it makes certain angle in time t. And is represented by omega w =theta/time

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State Law of conservation of machanical energy and proof

Posted by Anubhav Kushwaha 6 years, 3 months ago

CBSE > Class 11 > Physics

0 answers

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What is escape of velocity?

Posted by Shivani Sandals 6 years, 3 months ago

CBSE > Class 11 > Physics

1 answers

Pawi Sidhu 6 years, 2 months ago

The minimum velocity required to project a body vertically upward from the earth so that it nrver come back on the earth.

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What triangle law

Posted by Abhi Mehra 6 years, 3 months ago

CBSE > Class 11 > Physics

1 answers

Yuvika Gupta 6 years, 3 months ago

Two vectors are represented by the two sides of triangle taken in same order then the resultant is given by the third side taken in opposite order

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What is kethod light.

Posted by Subham Debnath 6 years, 3 months ago

CBSE > Class 11 > Physics

1 answers

Shivani Sandals 6 years, 3 months ago

It is a ray of negatively charged particles (electrons)

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What is avarage force

Posted by Shobha Kumari 6 years, 3 months ago

CBSE > Class 11 > Physics

1 answers

Parth Gupta 6 years, 3 months ago

Average Force is Total Force divided by Total Time.

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why projectile is in parbola not in straight line

Posted by Md Sadiqur 6 years, 3 months ago

CBSE > Class 11 > Physics

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If a car having a velocity v=50km/hr can round the curve banked at an angle tetha.find the value of tetha if radius of the curve is 40 m & friction is negligible [tan -1(0.5=26.5

Posted by Raajadurai Rahajadh 6 years, 3 months ago

CBSE > Class 11 > Physics

0 answers

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1 marks questions of chapter thermal properties of matters

Posted by Sahil Yadav 6 years, 3 months ago

CBSE > Class 11 > Physics

0 answers

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Name three conservation law from nature

Posted by Prabhjeet Singh Unjha 6 years, 3 months ago

CBSE > Class 11 > Physics

2 answers

Md Sadiqur 6 years, 3 months ago

1.law of conservation of energy. 2.law of conservation of momentum. 3.law of conservation of mass

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Yogita Ingle 6 years, 3 months ago

Conservation Laws: A conservation law is a hypothesis based on observation and experiments which cannot be proved. These can be verified via experiments.

Law of conservation of Energy: According to the general Law of conservation of energy, the energies remain constant over time and convert from one form to another. The law of conservation of energy applies to the whole universe and it is believed that the total energy of the universe remains unchanged.
Under identical conditions, the nature produces symmetric results at different time.

Law of conservation of Mass: This is a principle used in analysis of chemical reactions. A chemical reaction is basically a rearrangement of atoms among different molecules. If the total binding energy of the reacting molecules is less than the total binding energy of the product molecules, the difference appears as heat and the reaction is exothermic.

The opposite is true for energy absorbing (endothermic) reactions.

Since the atoms are merely rearranged but not destroyed, the total mass of the reactants is the same as the total mass of the products in a chemical reaction.

Mass is related to energy through Einstein theory,

E = mc2, c – speed of light in vacuum

Law of conservation of linear momentum: Symmetry of laws of nature with respect to translation in space is termed as law of conservation of linear momentum.

Example law of gravitation is same on earth and moon even if the acceleration due to gravity at moon is 1/6th than that at earth.

Law of conservation of angular momentum: Isotropy of space (no intrinsically preferred direction in space) underlies the law of conservation of angular momentum.

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a projectile is fired with a velocity u making an angle theta with the horizontal show that its trajectory is a parabola derive expression for time of flignt

Posted by Kartikay Mishra 6 years, 3 months ago

CBSE > Class 11 > Physics