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

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

Ask Question

What is the introduction of projectile motion

Posted by Manya Gupta 1 year, 11 months ago

1 answers

Hira Ansari 1 year, 8 months ago

Projectile means when a body forms a parabola in atmosphere this called projectile or in a simple way when we threw an object in air it is not straightly go to down it forms some structure called projectile and the motion by a body called projectile motion

1Thank You

ANSWER

Q31-A food packet is dropped from a helicopter which is elevating with velocity of 2m * s ^ - 1 . After 2s, (i) What is velocity the packet, (ii) What is height of the packet below the helicopter?

Posted by Mohd Faiz Alam 1 year, 11 months ago

CBSE > Class 11 > Physics

0 answers

ANSWER

What is Heisenberg uncertainty principle

Posted by Biky Das 1 year, 11 months ago

CBSE > Class 11 > Physics

1 answers

Jashan Bawa 1 year, 10 months ago

It is impossible to measure simultaneously, the position and momentum of a small microscope moving particale with absolute accuracy or certainly Mathematically, ∆x × ∆p ≥h/4π (∆p=m∆v) ∆x × ∆p ≈h/4πm

0Thank You

ANSWER

Round off 18.35 upto 3 digit

Posted by Innocent Me 1 year, 11 months ago

CBSE > Class 11 > Physics

4 answers

Himanshi Malik 1 year, 11 months ago

18.4

1Thank You

Aditi Tiwari 1 year, 11 months ago

18.3 is correct answer because 2nd digit after decimal is odd

3Thank You

Surbhi Kumari 1 year, 11 months ago

18.4

1Thank You

Rutvik Vankar 1 year, 11 months ago

18.3

0Thank You

ANSWER

find rate of change of y with respect to time at (20,15) dx/dt = - 0.2 at x ^ 2 * y + y * x ^ 2 = 20

Posted by Khushi Bairathi 1 year, 11 months ago

CBSE > Class 11 > Physics

0 answers

ANSWER

Find ratio of distance travelled by particle in consecutive sec during upward and in downward journey

Posted by Juned Khan 1 year, 11 months ago

CBSE > Class 11 > Physics

0 answers

ANSWER

Y=fl/al

Posted by Minggame Sangma 1 year, 11 months ago

CBSE > Class 11 > Physics

0 answers

ANSWER

The speed of a motor falls from 1100 r.p.m at no-lood to 1050 r.p.m at rated lood the speed regulation of motor is

Posted by Biky Das 1 year, 11 months ago

CBSE > Class 11 > Physics

0 answers

ANSWER

Find the direction of the magnetic field when an alpha partical which is projected towards west is deflected towards nort by it

Posted by Biky Das 1 year, 11 months ago

CBSE > Class 11 > Physics

0 answers

ANSWER

What is a wave

Posted by Biky Das 1 year, 11 months ago

CBSE > Class 11 > Physics

1 answers

Aashna Meena 1 year, 11 months ago

Wave is continues form of energy

1Thank You

ANSWER

Are inertial and gravitational mass of a body different from each other

Posted by Mehak Bhatia 1 year, 11 months ago

CBSE > Class 11 > Physics

0 answers

ANSWER

Find the area of parallelogram whose two sides are formed by vector A =3i+4j and B = 3i+ 7j

Posted by Nimsu .. 1 year, 11 months ago

CBSE > Class 11 > Physics

1 answers

Nazia Kazmi 1 year, 11 months ago

Can I ask some maths problem

5Thank You

ANSWER

What is power ?

Posted by Lawrence . B 1 year, 11 months ago

CBSE > Class 11 > Physics

1 answers

Avishka - 1 year, 11 months ago

power is the defined as the the rate of work done.its unit is watt.

0Thank You

ANSWER

Sin(3x+2)

Posted by Jddjdjdh Dgdhshsh 1 year, 11 months ago

CBSE > Class 11 > Physics

0 answers

ANSWER

Three resistance,each of 1 ohm are joined in parallel.three such combination are put in series.the equivalent resistance is given by

Posted by Android Aarav 1 year, 11 months ago

CBSE > Class 11 > Physics

1 answers

Avishka - 1 year, 11 months ago

resistance in parallel=1/3 resistance in series=3 equivalent resistance=10/3

0Thank You

ANSWER

Two vectors of magnitude 9 and 7 inclined to each other at 60°. What is the magnitude of the resultant? At what angle is the resultant inclined to the vector of magnitude 9?

Posted by Harman Malhi 1 year, 11 months ago

CBSE > Class 11 > Physics

0 answers

ANSWER

What is the meaning of sine

Posted by Rinky Halwai 1 year, 11 months ago

CBSE > Class 11 > Physics

0 answers

ANSWER

Simple harmonic motion of spring

Posted by Abhijit Auddy 1 year, 11 months ago

CBSE > Class 11 > Physics

1 answers

Chandresh Tomar 1 year, 11 months ago

Hyy

3Thank You

ANSWER

What is poissons ratio

Posted by Jeetlal Yadav 2 years ago

CBSE > Class 11 > Physics

1 answers

Jeetlal Yadav 2 years ago

The ratio of lateral stress to the longitudinal stress

0Thank You

ANSWER

An elevator that ascends from the lobby to the 36th floor, stops, descends to the 27th floor, stops, and returns to the lobby. Sketch its v-t a-t and x-t graphs

Posted by Alishba A 2 years ago

CBSE > Class 11 > Physics

0 answers

ANSWER

Kirchiof law question

Posted by Arun Saini 2 years ago

CBSE > Class 11 > Physics

0 answers

ANSWER

In succesive measurment of periods of oscillation of pendulum,the reading turn out to be 2.63,2.56,2.42,2.71,2.80 seconds. Calculate absolute error,releative error and percentage error.

Posted by Saptarshi Roy 2 years ago

CBSE > Class 11 > Physics

1 answers

Barsha Kumbhakar 2 years ago

First calculate the arithmetic mean of readings, Xmean = X1 + X2 + X3 + X4 + X5 =(2.63+2.56+2.42+2.71+2.80)/5 = 2.62s The absolute error can be calculated as, For first reading, ΔX1=(2.63−2.62) ΔX1=0.01s For second reading, ΔX2=(2.56−2.62) ΔX2=0.06s For third reading, ΔX3=(2.42−2.62) ΔX3=0.20s For forth reading, ΔX4=(2.71−2.62) ΔX4=0.09s For fifth reading, ΔX5=(2.80−2.62) ΔX5=0.18s Calculate the arithmetic mean of absolute errors, ΔXmean=(ΔX1+ΔX2+ΔX3+ΔX4+ΔX5)/5 ΔXmean=(0.01+0.06+0.20+0.09+0.18)/5 ΔXmean=0.54/5 ΔXmean=0.11s Calculate the relative error, RE=ΔXmean/Xmean RE=0.11/2.62 RE=0.04s Calculate the percentage error, PE=(ΔXmean/Xmean)×100 PE=(0.11/2.62)×100 PE=4%

4Thank You

ANSWER

Physics notes unit and measurement

Posted by Jatin Kumar 2 years ago

CBSE > Class 11 > Physics