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You might try this. p(1)V(1) = n(1)RT(1) and p(2)V(2) = n(2)RT(2) and V(1) = V(2) and n(1) = n(2). Divide eqn, 2 by eqn. 1 and solve for T(2).

What you are describing here is close to what we called thermionic energy conversion in the 1960's. The object was to place two electrodes in close proximity, heat one of them until thermionic electron emission occurs. The electrons with sufficient kinetic energy could cross the gap and be...

This just in from the morning newspaper. The Earth's magnetic field intensity is weakening and magnetic North is moving towards Siberia at 34 miles/year. All of which makes a case for relying on GPS rather than compasses.

One of my favorite demonstrations in Mechanics is to take two carts of identical mass on a track with velcro affixed to their front bumpers and give them equal and opposite velocities. The system of two carts thus have zero momentum before colliding and stopping in the middle of the track. The...

Consider a pressure cooker. As heat is added to the constant volume of the cooker, the liquid water is converted to vapor increasing the pressure which increases the boiling temperature which further increases the pressure until the pressure relief valve is opened, releasing some vapor and...

On a scale of 1 to 10, I would give Young and Freedman a 7. This text was formerly Sears and Zemansky, a standard text, and was inherited by Young. The first several editions published under his name were replete with errors. Maybe it has been cleaned up by now. One can only hope. Good luck.

The velocity profile across the pipe transitions from uniform at the entrance to about parabolic further downstream. To determine the total pressure, you need to integrate across the velocity profile.

If you are going to use a metal base plate, you can drill and tap your base plate for the pipe thread of a spark plug and use glyptal to seal the threads. Spark plugs make great high voltage feedthroughs. We made some simple vacuum systems with thick-walled, one foot ID glass cylinders and...

p ~ exp(-E/kT), E ~ omega^2

I did a lot of thermionic emission experiments in high vacuum during the 60's and even built a glass vacuum system tied to a LN cold trap, diffusion pump, and fore pump and an oven to bake and outgas the glass components. Temperatures were measured with an optical pyrometer and W-Re TC's...

You might check Kline and McClintock's 1953 paper on uncertainty analysis. It is a standard in the field.

All the above comments are good advice. I have a four foot stack of introductory Physics texts we have used over the last 30 years. My favorite is Serway which is used by many universities. The introductory calculus-based courses are usually a total of nine credit hours spread over two or...

srekai: Your solution is correct. v^2 / rg is in fact dimensionless.

Your methodology looks OK but 1) the moment of inertia of a rod about one end is mL^2 / 3 and the moment of inertia of the rock is ML^2; 2) the potential energy of the lever and rock in the vertical position is mgL/2 + MgL. Make those changes and recalculate the distance and I'll let you know...

The best way to see this is to connect an oscilloscope across each element. The differences in phase will be apparent.