(i) What does `|(dv)/(dt)|` and `(d|V|)/(dt)` represent ?
(ii) Can these be equal ?
(iii) Can `(d|V)/(dt)= 0` while `|(dV)/(dt)ne0` ?
(iv) Can `(d|V|)/(dt)ne 0` while `|(dv)/(dt)|=0` ?

(a) What does |(dv)/(dt)| and (d|v|)/(dt) represent? (b) Can these be equal?

Mechanism of the reaction is: What is (a) (-d[A])/(dt) , (b) (d[A_(1)])/(dt)

(dN)/(dt) = rN (1- (N)/(K)) What does the following notations represent ? (i) dN/ dt (ii) r (iii) N (iv) K

For the reaction : aA to bB , it is given that log[(-dA)/(dt)] = log [(dB)/(dt)] + 0.6020 . What is a : b is ?

If r is the radius, S the surface area and V the volume of a spherical bubble, prove that (i) (dV)/(dt)=4pir^(2)(dr)/(dt)

Mechanism of the reaction is: What is (-d[A])/(dt) ?

If S be the surface area of V be the volume of a sphere of radius r. Then (dv)/(dt) = (r)/(k) (ds)/(dt) . Value of k is

For the reaction: aA + bB rarr cC+dD Rate = (dx)/(dt) = (-1)/(a)(d[A])/(dt) = (-1)/(b)(d[B])/(dt) = (1)/( c)(d[C])/(dt) = (1)/(d)(d[D])/(dt) In the following reaction, xA rarr yB log.[-(d[A])/(dt)] = log.[(d[B])/(dt)] + 0.3 where negative isgn indicates rate of disappearance of the reactant. Thus, x:y is:

If v=(t+2)(t+3) then acceleration (i.e(dv)/(dt)) at t=1 sec.

The solution of (d v)/(dt)+k/m v=-g is