Answer:
protons 17
electrons 17
neutrons 18
Explanation:
sorry I can't draw the atomic structure right now but the nunbers are given above
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It can be said that most of the required information's are already given in the question.
Let us assume the speed of the passenger train = x
Speed of the freight train = y
x = y + 40
The second equation will be
6 * x = 10 * y
6x = 10y
Dividing both sides by 2, we get
3x = 5y
x = 5y/3
Putting the value of "x" in the first equation, we get
x = y + 40
5y/3 = y + 40
5y = 3y + 120
5y - 3y = 120
2y = 120
y = 60 mph
Putting the value of y in the first equation, we get
x = y + 40
= 60 + 40
= 100 mph
From the above deduction, we can conclude that the passenger train is traveling at 100 mph and the freight train is traveling at 60 mph.
Answer:

Explanation:
For this case we know that the charge associated to the transferred electrons of the small spark is
and we want to find the number of electrons transferred.
From the properties of matter we know that the charge of the electron is

And we know that the total charge is given by this expression:

Where Q represent the charge, n the number of electrons and e the charge of the electron.
If we solve for n we got:

And replacing we got:

Answer:
The correct answer is...
A. True
Abiotic is anything that is not alive (i.e. Rock)
Biotic is anything that is alive (I.e. Sunflower)