Homework Statement
a uniform rod of length 4.0m of mass M is supported by a cable which is under tension T. The other end rests against as wall, where it is held by friction. The coefficient of static friction is 0.5. An additional mass M is hung from the rod at a distance x from the wall...
Homework Statement
In a nuclear explosion there is a very quick release of energy in a small region of space. This produces a spherical shock wave, with the pressure inside the shock wave being thousands of times greater than the initial air pressure.
From wave theory it is found that the...
Also forgot to mention... you have an inelastic collision where two masses have momentum.! Remember that there is a release of energy in the form of heat because of the collision. I think that's the key for you to plug the formula as mentioned above.
However that guy who said w is work WRONG...
Entropy can be calculated as:
S = k ln W ( w not as in work)
also you can use S = Q/T ---> Q being heat T ----> temperature,
I have learned that in thermo when they refer at universe is just whatever is outside your system. so define your boundary and i think it's pretty simple.
String Problem! Please Help!
Homework Statement
A 54 g ice cube can slide without friction up and down a 35 degree slope. The ice cube is pressed against a spring at the bottom of the slope, compressing the spring 12 cm. The spring constant is 27 N/m
Homework Equations
F = -kx
F = ma...
so , let me get this straight ... in a situation where I have an ideal gas expanding:
If U = Q + W, Work is negative
If U = Q - W, Work is positive
right!?
thanx guys, it is really hard to get a grip on this when i have to take two papers which include thermodynamics, and each of the teachers like to take on their own version of this... it makes it confusing... !
Anyone Help Matlab! Please!?
I am pretty bad at using matlab, i have never used it before and i don't know what's wrong with my code, i would honestly appreciate if someone could give me a hand.
Script:
x=linspace(0,5,10)';
y=[2.75 4.83 5.05 6.80 8.83 8.64 11.03 13.20 13.08 15.68]'...
Homework Statement
All i want to know is how do i find the temperature of my heat and cold reservoir, given that they have a 90 degree celsius/kelvin differential and a 28% efficency.
Homework Equations
Efficency= Work out/ Work in = 1- Q out/Q in
The Attempt at a Solution
I been...
Hi to all! recently I been doing a lot of thermodynamics in University, however I have a huge problem.
Because it is my first semester I have to take physics class for freshmen, however I also take at the same time physics for year 2 Uni students. (This is because I can, because I am already...
Homework Statement
I have a diagram of a process of a monoatomic gas.
and the problem is that I know that the total amount of work = total amount of heat,
so there is no internal energy change. why? because my process started at the same temp that it finished. how ever... it is asking me...
yeah sorry i postulated wrong, here it is what i meant, 10^6 molecules are needed to establish a Maxwell-Boltzmann distribution, what is the minimum volume for the ideal gas law to hold @ 1atm and 0 C.
The thing is that i didn't want to post the problem I really need to think it by myself i...
I just have a question of this subject, it is a pretty straight forward concept, however there are things that i just can;t figure out, like in any given gas which is the minimum volume required to have a maxwell boltzman distribution, @ 1 atm 273.15 K ? I honestly just can't figure it out...