Geosynchronous satellites orbit the earth at a distance of 42 000 km from the earth's center. their angular speed at this height is the same as the rotation rate of the earth, so they appear stationary at certain locations in the sky. what is the force acting on a 1 500-kg satellite at this height?

Force will be 7.97 N

Explanation:

We have given that earth is at s distance of 42000 km from the earth center

So r = 42000 km = 42000000 m

Mass m = 1500 kg

Angular velocity of earth

We have to find the force

We know that force is given by

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.

reserve is the answer