An electron is emitted from a nucleus- State the effect this has on the charge of the nucleus

An electron is emitted from a nucleus- State the effect this has on the charge of the nucleus

an electron orbiting around the nucleus combines with a nuclear proton to produce a neutron, which remains in the nucleus, and a neutrino, which is emitted.  As in positron emission, the nuclear positive charge and hence the atomic number decreases by one unit, and the mass number remains the same.

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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.