Aboat sails south with the of a wind blowing in the direction s36â°e with magnitude 400 lb. find the work done by the wind as the boat moves 150 ft. (round your answer to the nearest whole number.)

woke done by the wind= 48541 Lb ft.

Explanation:

Work done is given by

W= F d cosθ

W= work

F= force= 400 Lb

d= distance=150 ft

W= 400 (150) cos 36

W=48541 Lb ft

answer: the direction of the wind is expressed as the direction from which the wind is blowing. for example, easterly winds blow from east to west, while westerly winds blow from west to east.

explanation:

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.