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

No products in the cart.

Ask questions which are clear, concise and easy to understand.

Ask Question

Prove that jcap.icap=j.j=k.k=1

Posted by Amulya Dubey 2 years, 11 months ago

CBSE > Class 11 > Physics

0 answers

ANSWER

What is Tension and spring force

Posted by Tanisha Upadhayay 2 years, 11 months ago

CBSE > Class 11 > Physics

1 answers

Snekha Sundaran 2 years, 11 months ago

The tension force is the force that is transmitted through a string, rope, cable or wire when it is pulled tight by forces acting from opposite ends. ... The spring force is the force exerted by a compressed or stretched spring upon any object that is attached to it.

ANSWER

Dimensions of coeffcient of viscosity are:

Posted by Md Zeeshan 2 years, 11 months ago

CBSE > Class 11 > Physics

3 answers

Deepak Kumar Meena 2 years, 7 months ago

ML 1 T 1

Deepak Rathore 2 years, 11 months ago

Ml-1t-1

Anjan Karthi 2 years, 11 months ago

F = 6πηrv. Therefore, coefficient of viscosity η = [MLT^-2] / [L] [LT^-1] = [ML^-1T^-1]. //

ANSWER

100/tan40°

Posted by Apoorva N 2 years, 11 months ago

CBSE > Class 11 > Physics

0 answers

ANSWER

MOI of Earth

Posted by Sundaram Katare 2 years, 11 months ago

CBSE > Class 11 > Physics

1 answers

Md Zeeshan 2 years, 11 months ago

If we think of the earth as a solid sphere rotating about its center, the moment of inertia is given by: I=25MR2

ANSWER

An object is projected some velocity at 45°angle from horizontal surface of the earth if maximum height is 10√2 meter than find out 1. Velocity of projectile 2. Range 3. Time of flight

Posted by Abhishek Gupta 2 years, 11 months ago

CBSE > Class 11 > Physics

1 answers

Gaurav Agarwal 2 years, 11 months ago

U = 20√(√2) metre per second R= 40√2 metre T=2√{2√(2)} seconds

ANSWER

A jet on an aircraft carrier at 30m/ s. It stop in 2.0 s. What is the displacement of the plane when it stop?

Posted by Aditi Kumari 2 years, 11 months ago

CBSE > Class 11 > Physics

4 answers

Sachin Raghav 2 years, 11 months ago

V=displacement×Time, therefore displacement=V × t = 30×2= 60m

Sundaram Katare 2 years, 11 months ago

Displacement = 30 m By using , S = - u^2/2a

Sundaram Katare 2 years, 11 months ago

Displacement= 30 m

Anjan Karthi 2 years, 11 months ago

V = Disp/t. Therefore, Disp = V × t = 30 × 2 = 60m.

ANSWER

Two bodies of masses 1g and 4g are moving with equal kinetic energy. The ratio of the magnitudes of their moments is

Posted by Tanishk Chaudhary 2 years, 11 months ago

CBSE > Class 11 > Physics

1 answers

Anjan Karthi 2 years, 11 months ago

K = P^2/2m. Therefore, P^2 ~ m. Therefore, m1/m2 = P1^2/P2^2. P1/P2 = √1g/4g = 1:2.//

ANSWER

A car is moving with a speed of 72km/h. Driver of a car applies break & bring it to the rest in 1second. Assuming that the retardation to be uniform, find the retardation & calculate the distance before it comes to rest.

Posted by Paru ? 2 years, 11 months ago

CBSE > Class 11 > Physics

1 answers

Sundaram Katare 2 years, 11 months ago

a= -20 m/s^2 S= 10 m

ANSWER

Two trains A and B are moving with a speed 100km/h in opposite direction. What is the relative velocity of the train A with respect to train B?

Posted by Paru ? 2 years, 11 months ago

CBSE > Class 11 > Physics

1 answers

Gaurav Agarwal 2 years, 11 months ago

200km/hr

ANSWER

Find tension in the string and normal reaction excted the floor in equaillibrium

Posted by Hacker Baba 2 years, 11 months ago

CBSE > Class 11 > Physics

0 answers

ANSWER

Explain check wheather the two vector zero or not ?

Posted by Sindhuswari Mishra 2 years, 11 months ago

CBSE > Class 11 > Physics

0 answers

ANSWER

What is projectile?Deduce expression for time of flight and vertical range.

Posted by Ashish Maru 2 years, 11 months ago

CBSE > Class 11 > Physics

1 answers

Snekha Sundaran 2 years, 11 months ago

An object which is moving under the effect of gravity is called gravity. The motion under the effect of gravity only is called projectile motion.

ANSWER

Determination of percentages of water of crystallization in barium chloride

Posted by Sujal Kumar 2 years, 11 months ago

CBSE > Class 11 > Physics

1 answers

Anjan Karthi 2 years, 11 months ago

Formula of barium sulphate is BaCl2. 2H2O. Therefore, percentage composition of water = [ Mass of water in the compound / Molar mass of compound ] × 100 = 3600/137 = 26.27 %.

ANSWER

Ques- According to second law of Newton, force is the cause and the outcome is: a) time b) velocity c) momentum d) acceleration

Posted by Nasra Javed 2 years, 11 months ago

CBSE > Class 11 > Physics

1 answers

Anjan Karthi 2 years, 11 months ago

(C) momentum.

ANSWER

Find an expression for maxi. Speed of circular motion of a car in a circular horizontal track of radius R the coefficient of a static friction between the car tyres and road along the surfaces is Ms

Posted by Ingila Jahan 2 years, 11 months ago

CBSE > Class 11 > Physics

2 answers

Anjan Karthi 2 years, 11 months ago

V = √Ms R g.

Devansh Pandey 2 years, 11 months ago

V = √u rg

ANSWER

Find the angle between the vector A= 4î+6j^-3k^ and vector B=-2î-5j^+7k^

Posted by Ganga Maya Rai 2 years, 11 months ago

CBSE > Class 11 > Physics

2 answers

Snekha Sundaran 2 years, 11 months ago

148.795°

Sambit Kumar 2 years, 11 months ago

Lol?

ANSWER

Find the angle between the vectors Vector A=4i^+6j^-3k^ Vector B=2i^-5j^+7k^

Posted by Arisha Fatma 2 years, 11 months ago

CBSE > Class 11 > Physics

1 answers

Snekha Sundaran 2 years, 11 months ago

148.795°

ANSWER

A body is initially at rest. It understand one-dimensional motion with constant acceleration .the power delivered to it at time t is proportional to

Posted by Shubham Yadav 2 years, 11 months ago

CBSE > Class 11 > Physics

0 answers

ANSWER

When a wire is stretched by a sudden force it's elongation is 'x', if the second wire is same material has 4 times the length and double the radius of first wire and is stretched by same force as before .Find the elongation

Posted by Vikesh Vikesh 2 years, 11 months ago

CBSE > Class 11 > Physics

0 answers

ANSWER

The scalar quantity is

Posted by Alkama Parveen 2 years, 11 months ago

CBSE > Class 11 > Physics

4 answers

Vikas Kushwah 2 years, 11 months ago

It quantity have only magnitude but not direction

Naman Patel 2 years, 11 months ago

Quantity that have magnitude only and without direction

Mannu Dahiya 2 years, 11 months ago

It is the quantity which have magnitude but no direction

Anjan Karthi 2 years, 11 months ago

Any physical quantity which can be measured only in terms of MAGNITUDE and direction does not affect it's measurements. Eg :- Length, Mass, Time, Temperature, etc.

ANSWER

The magnitude of vector quantity is

Posted by Alkama Parveen 2 years, 11 months ago

CBSE > Class 11 > Physics

2 answers

Neha Prasad 2 years, 11 months ago

Vector/unit vector

Mannu Dahiya 2 years, 11 months ago

Magnitude of vector=vector/unit vector

ANSWER

The motion of molecule of gas is

Posted by Alkama Parveen 2 years, 11 months ago

CBSE > Class 11 > Physics

1 answers

Kashish Garg 2 years, 11 months ago

Unlike solid and liquid state, molecules in gaseous state show random motion. That is the reason, gases take the shape of container and spread quickly in space. The random motion of molecules in the gaseous state is due to high kinetic energy in molecules. They have weak intermolecular interactions between them.

ANSWER

What will be the dimensional formula of 'g acceleration due to gravity'

Posted by Varun Agarwal 2 years, 11 months ago

CBSE > Class 11 > Physics

3 answers

Mashira Rubab 2 years, 11 months ago

[MLT-2]

Varun Agarwal 2 years, 11 months ago

Okay thank you

Priyanshu Dubey 2 years, 11 months ago

It is an acceleration therefore it's dimensional formula will be equal to dimensional formula of acceleration

ANSWER

What is FPS system of measurement

Posted by Mahmadul Hasan 2 years, 11 months ago

CBSE > Class 11 > Physics

4 answers

Tejaswini Rajput 2 years, 11 months ago

Foot , pound, time

Arisha Fatma 2 years, 11 months ago

In thus system,unit if length is foot,the unit of mass is pound and the unit of time is second

Mannu Dahiya 2 years, 11 months ago

Foot(length) Pound(mass) Second(time). This critria was followed by Britishers by which earlier we also used it after the independence of Indians from them as we were also habitual of their culture.

Anjan Karthi 2 years, 11 months ago

FPS system is the System of units and measurements which are of British origin. The three major units in this system are FEET for length (ft), POUNDS for mass (pd) and SECOND for time (sec).

ANSWER

Find the acceleration due to gravity in a mine of depth 640 m if the value at the surface is 9.800 m/s².The radius of Earth is 6400 km.

Posted by Rajendra Singh Rawat 2 years, 11 months ago

CBSE > Class 11 > Physics

2 answers

Anjan Karthi 2 years, 11 months ago

g at the depth = g at surface (1-d/r) = 9.8 (1- 640/6400000 ) = 9.8 (1 - 1/10000) = 9.8 (9999/10000) = 9.799 m/s^2.//

Devil Dada 2 years, 11 months ago

34

ANSWER

Determine the force required to double the length of steel wire of cross section 5×10^-5m^2. Young modulus of steel 2×10^11 nm^2

Posted by Chessghuman Chessghuman 3 years ago

CBSE > Class 11 > Physics

1 answers

Harmanpreet Kaur 2 years, 11 months ago

Y=FL/A∆L Given,A=5×10^-5m2,Y=2×10^11 nm^-2,L=X ,∆L=2L-L=L Putting the values in formulà F=YA∆L/L F=10^7N

ANSWER

If unit of length and time is doubled the numerical value of"g" ( acceleration due to gravity) will be :

Posted by Palak Latha 3 years ago

CBSE > Class 11 > Physics

2 answers

Anjan Karthi 2 years, 11 months ago

L' = 2L. T' = 2 T. (where, L' and T' are the new units of length and time). Therefore, Numerical value of new g ie, g' = a = L'/T' = 2L/2T = L/T. // Therefore, g' = g.

ᥬ JaຮWaηth᭄ 3 years ago

Sorry I don't know

ANSWER

A raindrop of mass 2.00 g falls from a height of 1.00 km. It hits the ground with a speed of 50.0 m/s. What is the work done by the resistive forces if any? (Take g = 10 ms 2)

Posted by Sanjusha Pv 3 years ago

CBSE > Class 11 > Physics

1 answers

Vasudha Vasudha 2 years, 11 months ago

Assuming u=0 and constant g=10ms−2 the work done by the grativational force is Wg=mgh =2×10−3×10×103=20J (b) ΔK=12mV2−0 =12×2×10−3×40×40 =1.6J From the work-energy theorem Δk=Wg+Wr where Wr is the work done by the opposing resistive force. 1.6=20+Wr Wr=−18.4J

ANSWER

Subscribe me on YouTube https://youtube.com/channel/UCpoY_1xpubmLoxLsZOndskg Plz frnds

Posted by Dishant Dahiya 2 years, 11 months ago

CBSE > Class 11 > Physics

2 answers

Mannu Dahiya 2 years, 11 months ago

Unsubscribe kr dia becoz of u not liked my comment

Mannu Dahiya 2 years, 11 months ago

Ho gya Like my comment

ANSWER

Page 21 of 558

myCBSEguide App

myCBSEguide

Trusted by 1 Crore+ Students

Test Generator

Test Generator

Create papers online. It's FREE.

CUET Mock Tests

CUET Mock Tests

75,000+ questions to practice only on myCBSEguide app

Google Play

Download myCBSEguide App