Which of the following is true about viscosity of liquids:
a) liquids with high viscosity do not flow as well as liquids with low viscosity.
b) liquids with high viscosity flow better than liquids with low viscosity.
c) liquids with high viscosity do not resist flow any more than liquids with low viscosity.
d) water is a good example of liquid with high viscosity

A) Liquids with high viscosity do not flow as well as liquids with low viscosity.

Explanation:

Viscosity is the property of layer of fluids which will flow relative to each other.

As we know that when two layers are moving on each other then due to cohesive force between the molecules the layers do not move freely.

If the cohesive force is strong between the molecules then we can say that liquid is of high viscosity which means that liquid can not move easily.

So here the correct option is

A) Liquids with high viscosity do not flow as well as liquids with low viscosity.

high viscosity of liquid means strong force between the layers which means layers can not move easily with respect to each other

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.