A 50 kg crate is being dragged across a floor by a force of 225 N at an angle of 40o from the horizontal. The crate is dragged a distance of 5.0 m and the frictional force is 60 N. 1.The work done on the crate by the applied force is ___x10^2 Nm. 2.The work done on the crate by the frictional force is -___x10^2 Nm. 3.The net work done on the crate is ___x102 Nm.

you can copy and paste this into web search, and there will be an answer I'm pretty sure

Explanation:

c.the charges if the proton and electron and gravity

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.