Two billiard balls each of mass 0.05 kg moving in opposite directions with speed 6 m s-1 collide and rebound with the same speed.
What is the impulse imparted to each bail due to the other?
1 Answers
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Consider quadratic equations `x^2-ax+b=0 and x^2+px+q=0` If the above equations have one common root and the other roots are reciprocals of each other
Correct Answer - A `(a)` x^(2)-ax+b=0`……..`(i)` x^(2)-px+q=0`……….`(ii)` Let the roots of `(i)` be `alpha`, `beta` and that of `(ii)` be `alpha`, `(1)/(beta)` `:. Alpha+beta=a`, `alphabeta=b`, `alpha+(1)/(beta)=p`, `(alpha)/(beta)=q` `:.((q-b)^(2))/((p-a)^(2))=(alpha^(2)((1)/(beta)-beta)^(2))/(((1)/(beta)-beta)^(2))` But `alpha^(2)=alphabeta*(alpha)/(beta)=bq` `implies...
2 Answers 1 views
Two identical dipoles have their axes at right angles to each other and also bisecting each other . Calculate the field at a distance r from the point
Correct Answer - `E = (1)/(4 pi epsi_(0)) (p)/(r^(3)) sqrt( 5 + 3 "sin" 2 theta)`
2 Answers 1 views
Two equal charges, +Q each, are at a distance r from each other. A third charge is placed on the line joining the above two charges such that all thes
Correct Answer - `q=Q//4`
2 Answers 2 views
A charge Q is placed at each of the two opposite corners of a square of side a.A charge is placed at each of the other two corners. (a) if the reultan
Correct Answer - `Q=-2sqrt2q,1/(4piepsi_0)*(-7q^2)/(sqrt2Q)` they form a stable system
2 Answers 3 views
A sphere of radius 10 cm conecentrically surrounded by a thin spherical shell of radius of 11 cm A charge of `100muC` is imparted to the outer spheree
Correct Answer - `-90,9muC,+9.10muC,+90.9muC`
2 Answers 1 views
Two long straight wires with equal cross-sectional radii a area located parallel to each other in air at large distance b from each other. Find the ca
Correct Answer - `(piepsilon_(0))/(In b//d)`
2 Answers 1 views
Two small spheres each of mass m are suspended from a common point by threads 0.5 m long. They are equally charged and repel each other to a distance
Correct Answer - `1.594 xx 10 ^(-8)C`
2 Answers 1 views
A charge `200mC` is imparted to .each of the two identical parallel plate capacitors connected in parallel. At `t = 0`, the plates ofboth the capacito
Correct Answer - `2muA`
2 Answers 3 views
i. Lenses are kept in contact with each other ii. Two lenses kept at a distance d apart from each other.
i when lenses are kept in contact then 1/f = 1/f1 + 1/f2 f = f1f2 / f1 + f2 ii. When kept distant apart, 1/f = 1/f1 +1/f2 - d/f1f2
2 Answers 1 views
When we drop an egg on a soft pillow, A) it do not break due to low impulse
A) it do not break due to low impulse
2 Answers 2 views