Answer:
-30=5(x+1) is -7
Explanation:
distribute flip subtract 5 from both sides divide both sides by 5
It is true ISHAHAAIWHAAOAWHSUS
Answer:C The final velocity is half of trained car B's initial velocity.
Explanation:
Answer:
I do not know the answer because not all of the information is there.
Explanation:
Answer: 
Explanation:
The mean free path
of an atom is given by the following formula:
(1)
Where:

is the Universal gas constant
is the absolute standard temperature
is the diameter of the helium atom
is the Avogadro's number
absolute standard pressure
Knowing this, let's find
from (1), in order to find the radius
of the helium atom:
(2)
(3)
(4)
If the radius is half the diameter:
(5)
Then:
(6)
(7)
However, we were asked to find this radius in nanometers. Knowing
:
(8)
Finally:
This is the radius of the helium atom in nanometers.