Molecular Physics | Thermodynamics Answers

Gas mixture containing8 mole of oxygen and 2 moles of argon at room temperature. What is the total internal energy?

A new temperature scale is proposed where ater freezes at -1 degree and boils at 9448 degrees. What is absolute zero in this new temp scale?

1) How fast should you throw an apple straight down from 40m up so that its impact speed would be the same as a mango's dropped from 60m ?

2) A car accelerates uniformly at 1.5m/s2 from rest 22m/s. Then the brakes are applied and it stops 2.5s later. Find the total distance travelled.

Graph Practice
Try making all three graphs for the following scenario.

1) John starts out north of home. At time zero he's driving a cement mixer south very fast at a constant speed.

2) He accidentally runs over an innocent moose crossing the road, so he slows to a stop to check on the poor moose.

3) He pauses for a while until he determines the moose is squashed flat and deader than a doornail.

4) Fleeing the scene of the crime, John takes off again in the same direction, speeding up quickly.

5) When his consience gets the better of him, he slows, turns around, and returns to the crash site.

A brick is dropped from 100m up. Find its impact velocity and air time.

An arrow is shot straight up from a pit 12m below ground at 38m/s.
a) Find its max height above ground
b) At what times is it at ground level

1. A gas expands adiabatically, and its volume doubles, while its absolute temperature drops 1.32 times. What is the number of degrees of freedom the gas molecules have?

2. Two identical systems each contain ν = 0.1 mole of an ideal gas at T = 300 K and p = 2.0 × 105 Pa. The pressure in the two systems is reduced by a factor 2, allowing the systems to expand, one adiabatically and one isothermally. What are the final temperatures and volumes of each system? Assume that γ = 5/3.

the volume of alcohol was 300cm3 at the temperature of 78 the volume letter increase to 320cm3 when the temperature was raised to 110 calculate the real expansivity

You're riding a unicorn at 25m/s and come to a uniform stop at a red light 20m away. What's your acceleration ?

A wire has a resistance of 10.0 ohms at 20.00c and 13.1 ohms at 1000c. Obtain a value for its temperature coefficient of resistance.