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

When the body placed on some surface is just on the point of sliding then in that condition the angle between applied force and normal force is called the angle of friction.

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How beta radioactive decay happened

Posted by Diya Chandnani 7 years, 5 months ago

CBSE > Class 11 > Physics

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Why is physics exciting subject? Explain

Posted by Sema Rajput 7 years, 5 months ago

CBSE > Class 11 > Physics

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Anmol Yadav 7 years, 5 months ago

Kyoki isme dimag lgta h

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In an equilateral triangle abc ,al,bmand cn are median. Force along bc and ba represented by them will have a resultent represented by

Posted by Sonali Agnihotry 7 years, 5 months ago

CBSE > Class 11 > Physics

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What is dimensional analysis ?

Posted by Abhishek Nishad 7 years, 5 months ago

CBSE > Class 11 > Physics

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Nancy Rajput 7 years, 5 months ago

While calculating, there might be a chance when the units have to be converted from one system to another. For Example :- 1L to m3,i.e.,1L = 1000cm3 = 10-3m3.This conversion from one system to another system can be accomplished by using dymensional analysis or unit factor method or factor label method.

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∂Αяѕнαиαα ყα∂Αѵ ??? 7 years, 5 months ago

in simple way... it is the method of studying a physical phenomenon on the basis of dimensions is called dimensional analysis.

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Mnot Guest✅ 7 years, 5 months ago

analysis using the fact that physical quantities added to or equated with each other must be expressed in terms of the same fundamental quantities (such as mass, length, or time) for inferences to be made about the relations between them.

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T=0.2s , u =54 km/h , a = -6m/s×s then what will be displacement

Posted by Ankit Yadav 7 years, 5 months ago

CBSE > Class 11 > Physics

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y=acoswt+b×t-c√t. find the dimension of c/(a×b)

Posted by Vans Bahadur 4 years, 6 months ago

CBSE > Class 11 > Physics

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A ball is kicked at angle 30 degree with vertical and horizontal component of velocity is 19.6 m per sec find maximum height

Posted by Bhoomi Verma 7 years, 5 months ago

CBSE > Class 11 > Physics

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A boy stand at 39.2 m from a building and throw a ball which just passes through a window 19.6 m above the ground calculate speed

Posted by Bhoomi Verma 7 years, 5 months ago

CBSE > Class 11 > Physics

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What is tringle law in vector?????

Posted by Ananya Dwivedi 7 years, 5 months ago

CBSE > Class 11 > Physics

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Priya Thakur 7 years, 5 months ago

If 2 vectors acting simultaneously on a body are represented both in magnitude and direction by 2 sides of a triangle taken in an order then the resultant(both magnitude and direction) of these vectors is given by 3rd side of that triangle taken in opposite order.

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A body is projected with velocity 30m/s with angle30 degree with vertical find maximum height and time of flight

Posted by Bhoomi Verma 7 years, 5 months ago

CBSE > Class 11 > Physics

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If an man walk 100m from his house straight then he turn left nd walk 25 m then turns right side nd walk 200m in the time of 1 second what is its velocity.

Posted by Muskan Singh 7 years, 5 months ago

CBSE > Class 11 > Physics

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A 5 kg object with speed of 30m/s strikes a steel plane at an angle of 45° and rebounds at same speed angle. Calculate A) the magnitude of the change in momentum of the object. B) change in magnitude of the momentum of the object.

Posted by Abhay Pandey 7 years, 5 months ago

CBSE > Class 11 > Physics

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Abhishree G 7 years, 5 months ago

A)Zero

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A boy is at 40m distance from a bus. Bus begin to move at 2m/sec . What should be the minimum velocity so that he can catch the bus

Posted by Jatin Goyal 7 years, 5 months ago

CBSE > Class 11 > Physics

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What are the sign coventions for a freely falling body

Posted by Radhika Mishra 7 years, 5 months ago

CBSE > Class 11 > Physics

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What is the formula of mirror

Posted by Prince Kumar 7 years, 5 months ago

CBSE > Class 11 > Physics

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Nischay Kishore 7 years, 5 months ago

1/v + 1/u = 1/f

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An object is allowed to fall freely from a tower of height 39.2m exactly at the same time another stone is thrown from the bottom of the tower in vertical upward direction with a velocity of 19.6m/s. calculate when and where these two stones would meet?

Posted by Kapadia Manan 7 years, 5 months ago

CBSE > Class 11 > Physics

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1Au(astronaumical unit) =?

Posted by Hemant Tiwari 7 years, 5 months ago

CBSE > Class 11 > Physics

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Nischay Kishore 7 years, 5 months ago

1.5*10^11 m

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Ayush Kumar Singh 7 years, 5 months ago

1.5 ×10 ^11 m

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Mayank Dodiya 7 years, 5 months ago

1.5×10^15m

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The Moon is observed from the diametrically opposite points A and B on the earth. The angle x subtended at the moon by the direction of observation is 1° 54`. Given the diameter of the earth to be about 1.276×10 7m, compute the distance of the moon from the earth.

Posted by Akanksha Tiwari 7 years, 5 months ago

CBSE > Class 11 > Physics

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Hemant Tiwari 7 years, 5 months ago

Hiii I'm also Tiwari solution: ¤(angle) =1°54' Therefore we have to change it into radian 1°=60'(min) , therefore given angle =60'+54'=114' 1min=60" sec Hence 114×60=6840"(second) 1"(sec) =4.85*10^-6 6840*4.85*10^-6 =3.32*10^-2 We have formula of this: Angel=arc/distance And we have to find d Therefore D=1.27*10^7 (given in question) /3.32*10^-2(Find above) Therefore the distance =3.84*10^8

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In thermodynamics It is said that when temp increases vol decreases but in charles law it is opposite. Why?

Posted by Vaibhav Rawat 7 years, 5 months ago

CBSE > Class 11 > Physics