Which object hawhich object has the most gravitational potential energy?
a. a 30 kg suitcase at a height of 1.5 m
b. a 20 kg suitcase at a height of 2 m
c. a 30 kg suitcase at a height of 2 m
d. a 20 kg suitcase at a height of 1.5 ms the most gravitational potential energy?

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.

answer a fan shaped mass of sediment deposited at the base of a mountain front do to an abrupt change in stream gradient;