Electrical currents of as little as approximately 0.06 A can be dangerous, and even fatal. Currents of this magnitude can make the heart fibrillate (beat in an uncontrolled manner). The resistance of a human body can be as high as Omega100 kΩ for contact with dry skin; but the resistance can be a hundred times smaller for wet skin, or if the skin is broken. Calculate the voltages that can cause a current of 0.06 A through a human body for dry skin and for wet skin.

Explanation:

From ohms law.

V=IR

Then, if the dry skin has a resistance of 100KΩ

R=100kΩ

1kΩ=1000Ω

R=100000Ω

Dry skin

The current of 0.06A

Then,

V=100000×0.06

V=6000Volts

That is a very big voltage

V=6KV

For a wet skin

The resistance of the body is , 100 times smaller than dry skin

Then,

R=100kΩ/100

R=1kΩ =1000Ω

The resistance of wet skin is 1000ohms

Using ohms law

V=IR

V=0.06×1000

V=60Volts

Therefore, a large voltage of 6000Volts can cause a current of 0.06A in a dry skin while, a voltage of 60V can cause a current of 0.06A in a wet skin

hèllo, sorry i really need some more points so if you need this qustion answered than retype it

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.