HELP ASAP PLSSS Your class is designing electromagnets. Available materials include: various batteries, different sizes of iron nails, and a farge roll
of copper wire. Your group built an electromagnet and collected the following results. What can you infer from their resties?
A) 20 coils is 4 times stronger than 5 coils.

B) Increasing the coils of wire increased the strength of the magnet.
Increasing the coils of wire decreased the strength of the magnet.

C) increasing the coils of wire decreased the strength of the magnet.

D)For every 5 coils of wire added to the electromagnet, the strength of the
magnet doubled

a) are muscles that have bands.

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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.

grav potential energy