Some homes that use baseboard heating use copper tubing. hot water runs through and heats the copper tubing, which in turn heats aluminum fins. it is actually the aluminum fins that heat the air rising through the fins. how much energy would it take to heat a section of the copper tubing that weighs about 645.0 g , from 13.20 âc to 28.22 âc ? copper has a specific heat of 0.3850 (j/g)ââc.

. west

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.