The method of reuse is always considered...

The method of reuse is always considered better than the recycling method because... a.energy is not utilised in it. b.new materials can be produced by it. c.uniform distribution of natural resources can be done by it. d.material or equipment can be maintained for a long time by it.

energy is not utilised in it.

new materials can be produced by it.

uniform distribution of natural resources can be done by it.

material or equipment can be maintained for a long time by it.

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energy is not utilised in it.

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A physical quantity is a phyical property of a phenomenon , body, or substance , that can be quantified by measurement. The magnitude of the components of a vector are to be considered dimensionally distinct. For example , rather than an undifferentiated length unit L, we may represent length in the x direction as L_(x) , and so forth. This requirement status ultimately from the requirement that each component of a physically meaningful equation (scaler or vector) must be dimensionally consistent . As as example , suppose we wish to calculate the drift S of a swimmer crossing a river flowing with velocity V_(x) and of widht D and he is swimming in direction perpendicular to the river flow with velocity V_(y) relation to river, assuming no use of directed lengths, the quantities of interest are then V_(x),V_(y) both dimensioned as (L)/(T) , S the drift and D width of river both having dimension L. with these four quantities, we may conclude tha the equation for the drift S may be written : S prop V_(x)^(a)V_(y)^(b)D^(c) Or dimensionally L=((L)/(T))^(a+b)xx(L)^(c) from which we may deduce that a+b+c=1 and a+b=0, which leaves one of these exponents undetermined. If, however, we use directed length dimensions, then V_(x) will be dimensioned as (L_(x))/(T), V_(y) as (L_(y))/(T) , S as L_(x)" and " D as L_(y) . The dimensional equation becomes : L_(x)=((L_(x))/(T))^(a) ((L_(y))/(T))^(b)(L_(y))^(c) and we may solve completely as a=1,b=-1 and c=1. The increase in deductive power gained by the use of directed length dimensions is apparent. Which of the following is not a physical quantity

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KUMAR PRAKASHAN-SUSTAINABLE MANAGEMENT OF NATURAL RESOURECES -OBJECTIVE QUESTION AND ANSWERS (SELECT THE CORRECT ALTERNATIVE FROM THOSE GIVEN EACH QUESTIONS: )

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