A. A flood would have the most positive effect
A) initial volume
We can calculate the initial volume of the gas by using the ideal gas law:
where
is the initial pressure of the gas
is the initial volume of the gas
is the number of moles
is the gas constant
is the initial temperature of the gas
By re-arranging this equation, we can find
:
2) Now the gas cools down to a temperature of
while the pressure is kept constant:
, so we can use again the ideal gas law to find the new volume of the gas
3) In a process at constant pressure, the work done by the gas is equal to the product between the pressure and the difference of volume:
by using the data we found at point 1) and 2), we find
where the negative sign means the work is done by the surrounding on the gas.
Explanation:
It is known that the relation between force and acceleration is as follows.
F = -ma ............ (1)
Also, acceleration (a) = ......... (2)
The given data is as follows.
v = 0, u = 14 m/s, s = 1
Therefore, putting the values of expression (2) into expression (1) as follows.
F =
=
= 5978 N
thus, we can conclude that net force on the person if he or she is wearing a seat belt and if the air bag deploys is 5978 N.