Ou pull your little sister across a flat snowy field on a sled. Your sister plus the sled have a mass of 34 kg. The rope is at an angle of 33 degrees to the ground. As you pull with a force of 26 N, the sled travels a distance of 47 m. How much work do you do?

Work done is 1026.48 J.

Explanation:

Given :

Mass of both sister and sled , m = 34 kg.

Angle from ground of force, .

Force applied , F = 26 N.

Distance travelled , d = 47 m.

We know, work done is, W = F.d =   ( is angle between F and d )=

Here ,

Putting value of , force and distance in work done equation we get,

Hence , this is the required solution.

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.

true is the correct answer

hope i