PLEASE HELP DUE TODAY!! 1. A charged cup contains 69 electrons, Calculate the charge on the cup.
( charge of an electron is -1.6 x 10^-19 )
2. A charged particle has a charge of -9.2 x 10^-16 C. How many electrons are found in the
charged particle?
3. A charged ball has 27 protons. Calculate the charge on the ball.
4. There are 63 charged particles on the surface of a book. If the total charge on the book is
- 6.4 x10^-18 C, determine whether the charged particles on the surface of the book are
electrons or protons.
5. A charged particle contains 7000 protons. Calculate the total charge on the charged
particle.

1. −1.10400000*10^−17

2.5,750

3. 27 electrons = −4.32000000*10^−18

4. Don't remember how to do

5) Same, don't remember how to do

Explanation:

Hope this at least helped

answer is c

explanation:

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.