What must be known to determine the direction of the magnetic force on a charge? check all that apply.
a. the type of the charge
b. the amount of the charge
c. the direction of the magnetic field
d. the velocity of the charge
e. the strength of the magnetic field
check all that apply

A, C, D

a. the type of the charge

b. the amount of the charge

c. the direction of the magnetic field

d. the velocity of the charge

e. the strength of the magnetic field

0.55x745.7j and a calculator

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.