A white blood cell has a diameter of approximately 10 micrometers, or 0.01 um. A model represents its diameter as 5 um. what is the ratio of model size to actual size?

Option B. 500 : 1

Explanation:

The following data were obtained from the question:

Actual size = 0.01 μm

Mode size = 5 μm

Ratio of model to actual size =.?

The ratio of the model size to the actual size can be obtained as illustrated below:

Model size : Actual size => 5 : 0.01

Model size/Actual size => 5 / 0.01

Model size/Actual size => 500/1

Model size : Actual size => 500 : 1

From the above illustration, the ratio of the model size to that of the actual size is 500 : 1

wind moving at higher speeds will transfer more energy to the water, resulting in stronger waves.

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.