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

Joule is the unit for energy Dimension Formula for Joule is [M¹L²T⁻²] Let n1(joule)=n2(erg) n1(M₁¹L₁²T₁⁻²]=n2[M₂¹L₂²T₂⁻²] n2=n1(M₁¹L₁²T₁⁻²] /M₂¹L₂²T₂⁻²] =n1x(M1/M2)¹x(L1/L2)²x(T1/T2)⁻² =1x(1kg/gm)¹x(1m/1cm)²x(1s/1s)⁻² =1x(1000g/gm)x(100cm/1cm)²x(1s/1s)⁻² =10⁷ Therefore n1(joule)=n2(erg) ∴1 Joule=10⁷erg @diti @ngel?

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ANSWER

What Is Vector ?

Posted by Akhand Pratap (Krishna) Tik Tok~Mr_Akhand_07 6 years, 4 months ago

CBSE > Class 11 > Physics

32 answers

Akhand Pratap (Krishna) Tik Tok~Mr_Akhand_07 6 years, 4 months ago

Hlo Aditi. Whatsup?

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Akhand Pratap (Krishna) Tik Tok~Mr_Akhand_07 6 years, 4 months ago

Nyc Name

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Akhand Pratap (Krishna) Tik Tok~Mr_Akhand_07 6 years, 4 months ago

Angel... Aditi..

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Akhand Pratap (Krishna) Tik Tok~Mr_Akhand_07 6 years, 4 months ago

Yup Angle

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#Aditi~ Angel???? 6 years, 4 months ago

Ok bbye Akhand Pratap...see u

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Akhand Pratap (Krishna) Tik Tok~Mr_Akhand_07 6 years, 4 months ago

Nyc talking u. Aditi. Ok, Bye. Talk on ur given tym, Bye bye

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Akhand Pratap (Krishna) Tik Tok~Mr_Akhand_07 6 years, 4 months ago

I m from Varanasi UP

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#Aditi~ Angel???? 6 years, 4 months ago

1Thank You

#Aditi~ Angel???? 6 years, 4 months ago

Jamshedpur

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Akhand Pratap (Krishna) Tik Tok~Mr_Akhand_07 6 years, 4 months ago

Can u tell me from where r u?

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Akhand Pratap (Krishna) Tik Tok~Mr_Akhand_07 6 years, 4 months ago

Ok Great

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Akhand Pratap (Krishna) Tik Tok~Mr_Akhand_07 6 years, 4 months ago

No whatsapp

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#Aditi~ Angel???? 6 years, 4 months ago

No fb ,insta & WhatsApp

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Akhand Pratap (Krishna) Tik Tok~Mr_Akhand_07 6 years, 4 months ago

Are u on insta

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Akhand Pratap (Krishna) Tik Tok~Mr_Akhand_07 6 years, 4 months ago

okay

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#Aditi~ Angel???? 6 years, 4 months ago

Ok...try karungi

2Thank You

Akhand Pratap (Krishna) Tik Tok~Mr_Akhand_07 6 years, 4 months ago

at 8 pm m comfortable!!!. Are u?

1Thank You

#Aditi~ Angel???? 6 years, 4 months ago

?????

1Thank You

Akhand Pratap (Krishna) Tik Tok~Mr_Akhand_07 6 years, 4 months ago

But I think its too late.?

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#Aditi~ Angel???? 6 years, 4 months ago

1Thank You

#Aditi~ Angel???? 6 years, 4 months ago

In this app only

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Akhand Pratap (Krishna) Tik Tok~Mr_Akhand_07 6 years, 4 months ago

On this app??

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Akhand Pratap (Krishna) Tik Tok~Mr_Akhand_07 6 years, 4 months ago

Where u will.talk

1Thank You

#Aditi~ Angel???? 6 years, 4 months ago

9-11 ok

2Thank You

#Aditi~ Angel???? 6 years, 4 months ago

So many questions ?ok....come at night i will talk 2 u at Night

2Thank You

Akhand Pratap (Krishna) Tik Tok~Mr_Akhand_07 6 years, 4 months ago

How r u?? From where r u?? Aditi Angle

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#Aditi~ Angel???? 6 years, 4 months ago

Vector is that quantity which have both magnitude as well as direction

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Akhand Pratap (Krishna) Tik Tok~Mr_Akhand_07 6 years, 4 months ago

Hyy Aditi

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#Aditi~ Angel???? 6 years, 4 months ago

Function of vector:A vector-valued function, also referred to as a vector function, is a mathematical function of one or more variables whose range is a set of multidimensional vectors or infinite-dimensional vectors.

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Akhand Pratap (Krishna) Tik Tok~Mr_Akhand_07 6 years, 4 months ago

And work function of vector??

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Akhand Pratap (Krishna) Tik Tok~Mr_Akhand_07 6 years, 4 months ago

Can U explain it with its properties.

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Aditya Narayan Singh 6 years, 4 months ago

Vector is that quantity which have magnitude as well as direction

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ANSWER

A police jeep is chasing a culprit going on a motorbike. The motorbike crosses a turning at a speed of 72kmph.The jeep follows it at a speed of 108kmph,crossing the turning ten seconds later than the bike.Assuming that they travel at constant speeds, how far from the turning will the jeep catch up with the bike?

Posted by #Aditi~ Angel???? 6 years, 4 months ago

CBSE > Class 11 > Physics

1 answers

Mehak Gautam 6 years, 4 months ago

According to the question, Velocity of the police jeep = 108 km/hr = 30 m/s Velocity of culprit's motorbike = 72km/hr = 20m/s Distance covered by the culprit in 10 secs, S=vt S= 20 × 10 = 200m Which means the police is 200 m behind the motorbike Relative velocity = 30 - 20 = 10 m/s Time = distance to be covered / relative velcity = 200/10 s = 20 s Then, S = vt S= 30 × 20 m =600 m The police jeep will catch up with the bike 600m away from the turning .

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ANSWER

What is the dimension of angular speed

Posted by Abhi Abhi 6 years, 4 months ago

CBSE > Class 11 > Physics

3 answers

Tanashri Wagh 6 years, 4 months ago

M^0L^0T^-1

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#Aditi~ Angel???? 6 years, 4 months ago

Angular Velocity = angle( theta)/time (t) 1/T=T^-1 DIMENSIONS:[M0L0T^-1] SI UNIT:rad s^-1 @diti?

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Gaurav Seth 6 years, 4 months ago

Angular velocity
v=rw

where w is angular velocity
v is linear velocity
r is radius
hence w=v/r
dimension of v is
LT^-1
R=L
hence the dimension of w
=LT^-1/L
w=T^-1

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ANSWER

Which type of quantity Avogadro number

Posted by Alok Singh 6 years, 4 months ago

CBSE > Class 11 > Physics

2 answers

#Aditi~ Angel???? 6 years, 4 months ago

Dimensionless Constant @diti?

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Gaurav Seth 6 years, 4 months ago

Avogadro's number is a Dimentionaless constant measured in mole^-1.
Dimensionless constant are pure numbers and mathematical constants.
Dimentional variable have dimentions and variable value.
For Example - Velocity,Force
Three Example of Dimentionless variables are :

▪ Specific Gravity.
▪ Angle.
▪ Strain.

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ANSWER

Two trains A and B of length 300m.Each are moving on two parallel tracks with a uniform speed of 54km/h in the same direction with the train A ahead of .The driver of train B decides to overtake A and accelerates by 2m/s .If after 25s the guard of train B just brushes part the drives of A . What was the original distance between them

Posted by Mohammed Junaid 6 years, 4 months ago

CBSE > Class 11 > Physics

1 answers

Gaurav Seth 6 years, 4 months ago

Here is the diagram depicting the question

Therefore, original distance between trains (distance between points R and Q) = 25 m, and

Distance between points R and P = 300m+25m = 325m

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ANSWER

What are Newton's Three Laws of Motion?

Posted by #Aditi~ Angel???? 6 years, 4 months ago

CBSE > Class 11 > Physics

18 answers

Akhand Pratap (Krishna) Tik Tok~Mr_Akhand_07 6 years, 4 months ago

See the ncert book or hcv u will find the solutions.

2Thank You

#Aditi~ Angel???? 6 years, 4 months ago

Yes Yash??

2Thank You

Yash ? 6 years, 4 months ago

Aditi..it is you..??

1Thank You

Ayush Vishwakarma?? 6 years, 4 months ago

My fb id is (Tidal vishwa) photo of audi car in road

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#Aditi~ Angel???? 6 years, 4 months ago

Newton's Third law of Motion States that:Action and reaction forces are simultaneous forces. There is no cause-effect relation between action and reaction. Any of the two mutual forces can be called action and the other reaction. Action and reaction act on different bodies and so they cannot be cancelled out. The internal action and reaction forces between different parts of a body do, however, sum to zero.

1Thank You

Ayush Vishwakarma?? 6 years, 4 months ago

Bye........ .....

1Thank You

#Aditi~ Angel???? 6 years, 4 months ago

Newtonís second law of motion : The rate of change of momentum of a body is proportional to the applied force and takes place in the direction in which the force acts. Thus where F is the net external force on the body and a its acceleration. We set the constant of proportionality k = 1 in SI units. Then The SI unit of force is newton : 1N = 1 Kg m . (a) The second law is consistent with the First Law (F = 0 implies a = 0)

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Kung Fu ?? 6 years, 4 months ago

Me toppr??

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Ayush Vishwakarma?? 6 years, 4 months ago

1) the body remains constant in that state which is continous occured untill the external force required to change state. 2) the momentum is directly proportional to the applied force. 3) every action is equal and opposite reaction.

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#Aditi~ Angel???? 6 years, 4 months ago

Not topper...ur topper

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Kung Fu ?? 6 years, 4 months ago

Oh topper pura pdh rhi hai??

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#Aditi~ Angel???? 6 years, 4 months ago

Newtonís first law of motion is the same law rephrased thus: ìEverybody continues to be in its state of rest or of uniform motion in a straight line, unless compelled by some external force to act otherwiseî. In simple terms, the First Law is “If external force on a body is zero, its acceleration is zero”

1Thank You

#Aditi~ Angel???? 6 years, 4 months ago

Im telling laws...ok

1Thank You

Kung Fu ?? 6 years, 4 months ago

Laws bata do bhai

1Thank You

Ayush Vishwakarma?? 6 years, 4 months ago

Equation hi bataye hai behen or bhai

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#Aditi~ Angel???? 6 years, 4 months ago

????

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Kung Fu ?? 6 years, 4 months ago

Ye 3 equations hai bhai

1Thank You

Ayush Vishwakarma?? 6 years, 4 months ago

Newton three laws of motion are 1)v=u+at 2)s=ut+1/2at^ 3)v^=u^-2as.

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ANSWER

I m have how many 1y

Posted by Anurag Rastogi 6 years, 4 months ago

CBSE > Class 11 > Physics

0 answers

ANSWER

Find the unit vector parallel to the resultant of the vector A=2i-6j-3k and vector B=4i+3j-k

Posted by Satendra Saini 6 years, 4 months ago

CBSE > Class 11 > Physics

0 answers

ANSWER

Chapter 5 Example 5.3 of NCERT pg no. 96

Posted by Miss-$ ¥ 6 years, 4 months ago

CBSE > Class 11 > Physics

0 answers

ANSWER

Guys how many chapters had you completed

Posted by Amisha Meena 6 years, 4 months ago

CBSE > Class 11 > Physics

1 answers

Tannu Sharma 6 years, 4 months ago

We are on work,energy and power

2Thank You

ANSWER

When is the relative velocity of two objects maximum

Posted by Kishan K Panchal 6 years, 4 months ago

CBSE > Class 11 > Physics

0 answers

ANSWER

What does the area of acceleration - time graph

Posted by Kishan K Panchal 6 years, 4 months ago

CBSE > Class 11 > Physics

0 answers

ANSWER

Tabulate the positive and negative powers of 10

Posted by Santhosh Kumar 6 years, 4 months ago

CBSE > Class 11 > Physics

0 answers

ANSWER

What is the difference between Distance and Displacement ?

Posted by #Aditi~ Angel???? 6 years, 4 months ago

CBSE > Class 11 > Physics

7 answers

Tanashri Wagh 6 years, 4 months ago

Distance is the path covered by the body.It is scalar quantity. It depends upon path of travelling.SI unit meter and cgs unit centimeter. Displacement is the distance from initial to final point.it is vector quantity. It depends upon position of the body. SI unit meter and cgs unit centimeter

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Kung Fu ?? 6 years, 4 months ago

All is well

1Thank You

Robinpreet Kaur 6 years, 4 months ago

Distance means total path and displacement means shortest path.

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Dinesh V 6 years, 4 months ago

DISTANCE: Distance is the actual path travelled by a body in some direction . DISPLACEMENT: It is length travelled by a body from its mean position. That is the distance travelled from the starting position and the end position of distance travelled by the body.

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Suresh Singla 6 years, 4 months ago

The actual path length covered by a body is called distance where the shortest distance that is made by joining the inital and final point of body called displacement

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Amisha Meena 6 years, 4 months ago

Distance=scalar quantity Displacement =vector quantity

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Gopal Singh 6 years, 4 months ago

Distance=the actual path length is called distance. Displacement=the shortest path length is called displacement.

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ANSWER

In an x-ray machine an electron is subjected to a force of 10 raise to -23 Newton in how much time the electron will cover a distance of 0.1 metre the mass of electron is 10 raise to minus 30 kilogram

Posted by Divyam Solanki 6 years, 4 months ago

CBSE > Class 11 > Physics