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What is the introduction of projectile motion

Posted by Manya Gupta 1 year, 5 months ago

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Hira Ansari 1 year, 2 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

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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, 5 months ago

CBSE > Class 11 > Physics

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What is Heisenberg uncertainty principle

Posted by Biky Das 1 year, 5 months ago

CBSE > Class 11 > Physics

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Jashan Bawa 1 year, 5 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

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Round off 18.35 upto 3 digit

Posted by Innocent Me 1 year, 5 months ago

CBSE > Class 11 > Physics

4 answers

Himanshi Malik 1 year, 5 months ago

18.4

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Aditi Tiwari 1 year, 5 months ago

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

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Surbhi Kumari 1 year, 5 months ago

18.4

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Rutvik Vankar 1 year, 5 months ago

18.3

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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, 5 months ago

CBSE > Class 11 > Physics

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

Posted by Juned Khan 1 year, 5 months ago

CBSE > Class 11 > Physics

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Y=fl/al

Posted by Minggame Sangma 1 year, 5 months ago

CBSE > Class 11 > Physics

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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, 5 months ago

CBSE > Class 11 > Physics

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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, 5 months ago

CBSE > Class 11 > Physics

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What is a wave

Posted by Biky Das 1 year, 5 months ago

CBSE > Class 11 > Physics

1 answers

Aashna Meena 1 year, 5 months ago

Wave is continues form of energy

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

Posted by Mehak Bhatia 1 year, 5 months ago

CBSE > Class 11 > Physics

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

Posted by Nimsu .. 1 year, 5 months ago

CBSE > Class 11 > Physics

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Nazia Kazmi 1 year, 5 months ago

Can I ask some maths problem

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What is power ?

Posted by Lawrence . B 1 year, 5 months ago

CBSE > Class 11 > Physics

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Avishka - 1 year, 5 months ago

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

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Sin(3x+2)

Posted by Jddjdjdh Dgdhshsh 1 year, 6 months ago

CBSE > Class 11 > Physics

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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, 6 months ago

CBSE > Class 11 > Physics

1 answers

Avishka - 1 year, 5 months ago

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

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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, 6 months ago

CBSE > Class 11 > Physics

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What is the meaning of sine

Posted by Rinky Halwai 1 year, 6 months ago

CBSE > Class 11 > Physics

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Simple harmonic motion of spring

Posted by Abhijit Auddy 1 year, 6 months ago

CBSE > Class 11 > Physics

1 answers

Chandresh Tomar 1 year, 6 months ago

Hyy

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What is poissons ratio

Posted by Jeetlal Yadav 1 year, 6 months ago

CBSE > Class 11 > Physics

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Jeetlal Yadav 1 year, 6 months ago

The ratio of lateral stress to the longitudinal stress

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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 1 year, 6 months ago

CBSE > Class 11 > Physics

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Kirchiof law question

Posted by Arun Saini 1 year, 6 months ago

CBSE > Class 11 > Physics

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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 1 year, 6 months ago

CBSE > Class 11 > Physics

1 answers

Barsha Kumbhakar 1 year, 6 months 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%

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Physics notes unit and measurement

Posted by Jatin Kumar 1 year, 6 months ago

CBSE > Class 11 > Physics