Energia potencial de una pila de 100g colocados sobre una mesa de 68 cm del piso

Ep=0.66J

Explanation:

We have to use the formula for potential energy

where g is the gravity constant, h is the heigth an M is the mass. By replacing and taking into account the appropriate units (kg and m) we have

100g=0.1kg

68cm=0.68m

I hope this is useful for you

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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.

c because the news are a source of information of things that happen on the daily and shows evidence about that particular topic