The ideal gas law allows a scientist to calculate the number of moles that the other gas laws do not. The ideal gas law is given as
P V = n RT
rearranging the equation by dividing both side by "RT", we get
PV/(RT) = nRT/(RT)
n = PV/(RT)
inserting the values of pressure, volume and temperature, we get number of moles.
Answer:
Both rod have the same tensile stress
Explanation:
Given information,
The weight first rod,
= 1000 N
The length of first rod,
= 2.0 m
The weight second rod,
= 500 N
The length of second rod,
= 1.0 m
The equation of tensile stress, σ = 
where
σ = tensile stress (N/
or Pa)
F = Force (N)
A = Area (N/
or Pa)
so
σ1 =
, A = 2πl
= 
=
N/
now calculate σ2
σ2 = 
= 
=
N/
σ1/σ2 =
/ 
σ1/σ2 = 1
σ1 = σ2
Hence, the tensile stress of first and second rod are the same.
366J. Energy is conserved and is transformed from completely potential energy at the top to completely kinetic at the bottom.