Acable exerts a constant upward tension of magnitude 2.14 ✕ 104 n on a 1.80 ✕ 103 kg elevator as it rises through a vertical distance of 2.30 m. hint (a) find the work done by the tension force on the elevator (in j)

49220 J

Explanation:

The work done by the tension force on the elevator is given by:

W = F d

where

F is the magnitude of the tension

d is the vertical distance through which the elevator has moved

Here we have

d = 2.30 m

Substituting,

what was the answer?

answer: at 24 february, 2014 the population gets twice of its initial population.

explanation:

since we have given that

the population for alpha city, t years after january 1, 2004 is given as

first we find out the initial population, i.e. t=0,

so, our quadratic equation becomes,

according to question, we have said that if the population has twice its initial population, then it becomes

so, time taken to reach this above mentioned population is given by

now, we know that time can't be negative so, we take t=9.149 years.

hence, at 24 february, 2014 the population gets twice of its initial population.