Total traslational kinetic energy problem

AI Thread Summary
To calculate the total translational kinetic energy in a classroom filled with nitrogen at 1.01 x 10^5 Pa and 20.7 degrees C, the Maxwell-Boltzmann distribution formula is essential. The classroom dimensions are 4.60 m x 5.20 m x 8.80 m, which can be used to determine the volume and, subsequently, the number of nitrogen molecules present. The translational kinetic energy is given by the equation Et = 1/2 mv², where m represents the mass and v the velocity of the gas molecules. The discussion emphasizes the need to apply the correct equations to find the solution. Understanding the properties of nitrogen and its behavior at the given conditions is crucial for accurate calculations.
amandamarie29
Messages
4
Reaction score
0

Homework Statement


What is the total translational kinetic energy in a classroom filled with nitrogen at 1.01 x 10^5 Pa and 20.7 degrees C? The dimensions of the classroom are 4.60 m x 5.20 m x 8.80 m.


Homework Equations



Translational kinetic energy can be expressed as
Et = 1/2 mv2 (1)
where
Et = kinetic translation energy (Joule, ft lb)
m = mass (kg, slugs)
v = velocity (m/s, ft/s)
one slug = 32.1740 pounds (as mass) - lbm


The Attempt at a Solution


this is as far as i got..
 
Physics news on Phys.org
use the Maxwell–Boltzmann distribution formula...that is the equation you need to use.
 
TL;DR Summary: I came across this question from a Sri Lankan A-level textbook. Question - An ice cube with a length of 10 cm is immersed in water at 0 °C. An observer observes the ice cube from the water, and it seems to be 7.75 cm long. If the refractive index of water is 4/3, find the height of the ice cube immersed in the water. I could not understand how the apparent height of the ice cube in the water depends on the height of the ice cube immersed in the water. Does anyone have an...
Thread 'Variable mass system : water sprayed into a moving container'
Starting with the mass considerations #m(t)# is mass of water #M_{c}# mass of container and #M(t)# mass of total system $$M(t) = M_{C} + m(t)$$ $$\Rightarrow \frac{dM(t)}{dt} = \frac{dm(t)}{dt}$$ $$P_i = Mv + u \, dm$$ $$P_f = (M + dm)(v + dv)$$ $$\Delta P = M \, dv + (v - u) \, dm$$ $$F = \frac{dP}{dt} = M \frac{dv}{dt} + (v - u) \frac{dm}{dt}$$ $$F = u \frac{dm}{dt} = \rho A u^2$$ from conservation of momentum , the cannon recoils with the same force which it applies. $$\quad \frac{dm}{dt}...
Back
Top