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

All those quantities which can be measured by using physical instrument is called physical quantity.. For ex- length( meter scale) , temperature( thermometer), speed( speedometer)..

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Shruti Kumari 4 years, 3 months ago

All those quantities which can be measured directly or indirectly and in terms of which the laws of physics can be explained are called physical quantities

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Amritansh‌ Pandey 4 years, 3 months ago

The quantity which can measured by any instruments and which describe the physical world. PQ=n×u

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Aashay Tembhurne 4 years, 3 months ago

It is a quantity that can be measured. Example - length

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Dimensional analysis ke questions

Posted by Manorma Singh 4 years, 3 months ago

CBSE > Class 11 > Physics

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Power= work/ time

Posted by Piyush Pradhan 4 years, 3 months ago

CBSE > Class 11 > Physics

3 answers

Prabhjot Kaur 4 years, 3 months ago

Yes right

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Shruti Kumari 4 years, 3 months ago

Yes

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Akash .R 4 years, 3 months ago

Correct

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Ship A is moving south with a speed of 10km/h. Another ship B is moving towards east with a speed of 10km/h. At a certain instant the ship B is due south of ship A and is at distance of 10km from ship A. Find the shortest distance between the ships

Posted by Prachi Modi 4 years, 3 months ago

CBSE > Class 11 > Physics

1 answers

Anjan Karthi 4 years, 3 months ago

5√2 km. //

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what is physics world

Posted by Raju Sharma 4 years, 3 months ago

CBSE > Class 11 > Physics

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Aman Kumar 4 years, 3 months ago

Physics world can be defined as physics is a world of mathematics physics is made up of fusis word physics means natural phenomenon etc Ok thanks ??

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Draw the time position graph of bodies in one Diamentional motion a. Two bodies moving with same velocity

Posted by Athira Krish 4 years, 3 months ago

CBSE > Class 11 > Physics

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The time period of simple pendulum depend on

Posted by Himanshi Himanshi 4 years, 3 months ago

CBSE > Class 11 > Physics

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Diksha Thakur 4 years, 3 months ago

It depends on the length of pendulum.

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A body of mass 10 kg moving at a height of 2 m, with uniform speed of 2 m/s. Its total energy is

Posted by Rahul Parul 4 years, 3 months ago

CBSE > Class 11 > Physics

2 answers

Prabhjot Kaur 4 years, 3 months ago

Kinetic energy= 1/2mv^2= 1/2*10*2*2=20joule Potential energy=mgh= 10*9.8*2= 196 joule Total energy= 196+20=216 joule

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Anjan Karthi 4 years, 3 months ago

Kinetic energy = 1/2 mv^2 = 10 × (2) ^2 /2 = 200 J. // Potential energy = mgh = 10 × 9.8 × 2 = 196 J. Therefore, total energy = 200 + 196 = 396 J. //

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A heavy steal ball A held in contact with a extremely light steel ball B at height h = 5√3 m above the hard horizontal floor. The line joining the centers of both the balls makes angle 0 = 30° with the vertical. Mass of the light ball B is negligible as compared with that of the heavy ball A. If all the collisions are elastic and sizes of the balls are negligible as compared to the height h, find the horizontal range R of the ball B.

Posted by Gaurav Maurya 4 years, 3 months ago

CBSE > Class 11 > Physics

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A man of 60 kg weight is standing at rest on a platform. He jumps up vertically a distance of 1 m and the platform at the same instant moves horizontally forward with the result that the man lands 1 meter behind the point on the platfrom from where the took the jump the total work done by the man at the instant he lands is

Posted by Rahul Parul 4 years, 3 months ago

CBSE > Class 11 > Physics

2 answers

Gaurav Maurya 4 years, 3 months ago

Hope you like it

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Gaurav Maurya 4 years, 3 months ago

Work done = F . S =Fscostheeta (where Theeta=0°) W = M × g × s = 60 × 10 × 1 = 600 J

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A force of 10N produce and acceleration of 2ms in a body of mass M1 and 5ms in a body of mass M2. What will be the acceleration produced by the same force when both the bodies are tied together

Posted by Vaibhav Pandey 4 years, 3 months ago

CBSE > Class 11 > Physics

1 answers

Aashay Tembhurne 4 years, 3 months ago

Force=mass×acceleration In case 1 substituting values 10=M1×2 we get M1 as 5kg And 10 = M2 × 5 we get M2 that equals to 2kg Now both the bodies are tied together so the mass will be sum of both objects that is M1+ M2 = M' and we have to take force as 10N as per question So, 10 = M' × a a= 10/7 = 1.42 m/s²

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Dual nature of matter belongs to which chapter

Posted by Ankit Rao 4 years, 3 months ago

CBSE > Class 11 > Physics

1 answers

Anjan Karthi 4 years, 3 months ago

Structure of an atom, chemistry. Wave nature and particle nature.

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Why capacitor blocks DC but allow to pass AC ?

Posted by Himanshi Rajput 4 years, 3 months ago

CBSE > Class 11 > Physics

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a cricket ball of mass 0.2 kg moving with a velocity of 20ms^1 is brought to rest in 0.4 s. find the average force

Posted by Vartika Pandey 4 years, 3 months ago

CBSE > Class 11 > Physics

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a ball a is dropped from the top of a tower 50 m high and at the same instant another ball b is projected upwards with the velocity of 25 m/s. after how much time and where the two balls will meet

Posted by Lalhrikpuia Ralte 4 years, 3 months ago

CBSE > Class 11 > Physics

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A dart of mass 10g moving with a velocity of 100 m/s, strikes a wooden block of mass 990 g embedded in it. Find the velocity with which the combined mass would move. Also find the loss in KE during this collision.

Posted by Jeevan L 20211527 4 years, 3 months ago

CBSE > Class 11 > Physics

1 answers

Mohit Singla 4 years, 3 months ago

Velocity is 1 m/s and loss of kinetic energy is 49.5 j

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Some study hacks for phy.?

Posted by Shristi Giri 4 years, 3 months ago

CBSE > Class 11 > Physics

1 answers

Priyanshi Sharma 4 years, 3 months ago

Solve as much numericals as you can.

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a horse exerts a full of 320 N at an angle of 30° to the horizontal . find the force used by the horse in the horizontal direction.

Posted by Vaibhav Pandey 4 years, 3 months ago

CBSE > Class 11 > Physics

1 answers

Anjan Karthi 4 years, 3 months ago

A = 320 N. ∅ = 30°. Therefore, horizontal component of force would be A cos∅ = 320 × √3/2 = 160√3 N. //

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a vector of magnitude 10 unit makes an angle 30° with x-axis. find its horizontal and vertical components

Posted by Vartika Pandey 4 years, 3 months ago

CBSE > Class 11 > Physics

1 answers

Anjan Karthi 4 years, 3 months ago

If a vector can have a magnitude A making an angle ∅ with x axis, then its vertical component is A sin ∅ and horizontal component is A cos ∅. Therefore, in this case, hori. component is 5√3 units and vertical. component is 5 units.

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Sinx+cosx/sin x - cos x

Posted by Semiha Thappa 4 years, 4 months ago

CBSE > Class 11 > Physics

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10. At what angle the two Forces (F1 + F2) and (F1 - F2) act so that the resultant √2( F1 ^2 + F2^2)

Posted by Vartika Pandey 4 years, 4 months ago

CBSE > Class 11 > Physics

1 answers

Anjan Karthi 4 years, 3 months ago

Apply formula R = √(A^2 + B^2 + 2AB cos∅) Here, ∅ is the angle, r is resultant and A and B are the forces. Square both sides for easy calculations. Hope it helps ?

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A particle starts from the origin at t=0 with a velocity 5.0 î m/s and moves in x-y plane under action of a force which produces a constant acceleration of (3.0i+2.0j)m/s². (a) what is the y-coordinate of the particle at the instance it's x-coordinate is 84m ? (b) what is the speed of the particle at this time?

Posted by Juyal Ahmed Barbhuiya 4 years, 4 months ago

CBSE > Class 11 > Physics

1 answers

Sia ? 4 years, 4 months ago

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Consider the motion of the tip of the minute hand of a clock in one hour

Posted by Aditya Das 4 years, 4 months ago

CBSE > Class 11 > Physics

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What is law of motion

Posted by Shefali Patel 4 years, 4 months ago

CBSE > Class 11 > Physics

1 answers

Sia ? 4 years, 4 months ago

Newton's laws of motion are three laws that describe the relationship between the motion of an object and the forces acting on it. The first law states that an object either remains at rest or continues to move at a constant velocity, unless it is acted upon by an external force.

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There a a Copper wire is wound around a cylindrical solenoid of 6cm diameter and 30 cm length. 5 turns per cm. The wire hos diameter of 0.163 cm and has a resistance of 0.01 ohm per meter. If this solenoid is Connected across a 24 volt battery. what will be the magnetic field strength within the solenoid?

Posted by Abhay Singh 4 years, 4 months ago

CBSE > Class 11 > Physics