Aperson weighs 857 n on the surface of earth and 5320 n on the surface of another planet. what is the acceleration due to gravity on that planet? a. 44.4 m/s^2 b. 69.9 m/s^2 c. 52.9 m/s^2 d. 60.8 m/s^2

Option D is correct.

60.8 m/

Explanation:

g on planet = (g on earth x weight on planet ) / (weight on earth)

put the values in the formula take g as 9.8 m/;

g on planet = (9.8*5320) / (857)

                    =60.8 m/

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.

e/c, where e is its total energy