Recently Active Physics Questions

When one swims across a flowing river,maximum energy is spent in a)first 1/3rd of distance b)second 1/3rd of distance c)last 1/3rd of distance d)equal energy is spent throughout ...

A shell explodes in a region of negligible gravity field giving out fragments of equal mass, then it's total : (a) momentum = that before collision (b) momentum and K.e depend on mass of the fragments (c) K.E is greater than ...

To all folks in TargetIIT , I'm weak in mechanics especially Fluid Mechanics and I don't know even the basic concepts [2] . In the quest for more concepts..I'm posting an analysis of a fluid statics concept regarding Archimed ...

Please all the Targetiitians and BITSAT 2010 aspirants, all those who gave BITSAT this year, please discuss about the questions and pattern and difficulty level of the paper here........ ...

PAPER:WOOD :: Cheese: Curd Milk Cow Butter Ans Milk ...

A particle is projected from a horizontal plane(x-z plane) such that its velocity vector at time t is given by V=ai+(b-ct)j . Its range on horizontal plane is a) ba/c b)2ba/c c)3ba/c d)None ...

Consider a drop of conducting liquid in gravity free space. Its radius is R while the surface tension of the liquid is T. Now the drop is supplied some charge Q. For what values of Q is the drop stable. ...

I agree that the figs r tooooooo tiny But plzz use ur magnifiers *Image* ...

(%) Optical glass has high percentage of (A) MgO (B) B2O3 (C) PbO (D) Al2O3 Ans PbO ...

A boy pushes a cylinder of mass m1 with a help of a plank of mass m2 as shown in the figure .There is no slipping at any contact. The horizontal component of force applied by the man is F . Find a) Acceleration of the plank a ...

We say that something is white in colour because it reflects all the incident wavelengths... Why is it that Mirror is not white? Because, even mirror reflects back all the incident colours! ...

why is co-efficient of kinetic friction less than static friction? ...

Consider the infinitely tall system of identical massive cylinders and massless planks shown in Fig. The moment of inertia of the cylinders is I = MR2/2. There are two cylinders at each level, and the number of levels is infi ...

i am posting this question to make the lives of many people easier in mechanics...[1] so the concept of reduced mass goes as follows... there are two types of masses positive mass and negative mass relate to +charge and - cha ...

Heating a mixture of calcium formate and calcium acetate produces acetone acetaldehyde methane formaldehyde ...

*Image* If on the x axis, charge 10 microcoulomb is kept at 1 unit, 20 microcoulomb at 2 units, 30 microcoulomb at 3 units...and so on till infinity. What is the net electric field experienced by a positively charged particle ...

(!)Continue the sequence Newspaper , Hoarding , Television (A) Press (B) Media (C) Broadcast (D) Rumour Ans given B My Ans C (@) In ancient India scholars had no interest in political power or "material growth" "material " st ...

The following question is a conceptual one . So hope you like solving it : An article is published in the Times Of India . It reads - THEY STRIKE AGAIN : --- New Delhi , 17 - th Semptember , 2012 : Yesterday , a group of noto ...

This year all B.Tech regular admissions will be through this portal and not through CCB counselling. AIEEE ranks will be used as before, but students must register and apply through the portal. Students applying online can pa ...

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A sphere of radius ' r ' is projected up and inclined plane for which \mu =\left(\frac{1}{}7 \right)tan\theta with a velocity ' v0 ' and initial angular velocity \omega _{0}(v_{0}>r\omega _{0}). . Prove that friction acts ...

an electron with a speed of 1.2 .10^7 m/s moves horizontally into a region where a constant vertical force of 4.5 . 10 -16N acts on it mass of electron is 9.11 . 10-31 kg find vertical distance electron is deflected durin tim ...

an object of mass 5kg is projected with v=20m/s at angle of 60 wit d horizontal .at highest point of its path d projectile explodes and breaks into 2 fragments of mass 1kg and 4kg.they separate horizontally.the explosion rele ...

These are two questions which I fancy a lot. Try them. They are common, but they check your basics. Q1) *Image* Rod AB of length 3m and weight 445 N is shown immediately after it has been released from rest. Compute the tensi ...

Instructions Calculators,clip boards log tables etc all are allowed,jo chahiye sab istmal kar lo question paper contains 3 questions jitne rough paper le lo(us time madras paper nahi banata tha) Time:5 minutes for each questi ...

sir aap baar bar ye explain kar rahe hain ki internal reflection ho jata hai!!!but i have also seen in a lecture on rainbows ALONGWITH T.I.R. refraction too occurs.......n this seems something really weird to me... as the usu ...

A projectile is fired horizontally with a velocity of 98 m/s from 490 m high . find 1) time taken to reach ground 2) the distance of target from the hill 3)the velocity with which the body strikes the ground. ...

*Image* If a cylinder of mass m and length l is rotated about its axis with an angular velocity W, then what is the electric potential difference between the outer surface and the center of the cylinder. The cylinder has no c ...

If angle of dip in two perpendicular planes is δ1 and δ2 ,then prove that cot2δ1+cot2δ2 =cot2δ where δ is true angle of dip. ...

what is the minimum force to move a body of mass m on a horizontal floor with coeff of friction k ( ans is not kmg) ? ...