Suppose a population A has 100 observations 101, 102, ...., 200, and another population B has 100 observations 151, 152, ..., 250. If `V_(A)` and `V_(B)` represent the variances of the two populations respectively, then show that `(V_(A))/(V_(B))` =

The births and deaths of four populations A, B, C and D in a year are given below. Which population has the highest growth rate?

The two diodes A and B are biased as shown, then -5V A -9V -3V B -6V

A ball is dropped from the top of a building .It takes 0.5 s to fall past the 3m length of a window some distance from the top of the building .If the velocity of the ball at the top and at the bottom of the window are V_(T) and V_(B) respectively then V_(T)+V_(B)=?

The volocity v of the particle at time t is given by v = at + b/(t + c) , where a, b and c are constants. The dimensions of a,b, and c are respectively