What gauge pressure is required in the city water mains for a stream from a fire hose connected to the mains to reach a vertical height of 17.0 m ? (Assume that the mains have a much larger diameter than the fire hose.)

layers of the earth affect the waves and these effects are seen on instruiments such as seimometers

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.

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