# Search results

1. ### Thermodynamics problem help again

Again, thanks very much.
2. ### Thermodynamics problem help again

Sorry for the second question in just a day, but my proffessor really didn't cover this material very well. Thanks for any help given :). A cylinder contains 4.22 mol of helium gas at a temperature of 314 K. The molar specific heat of helium at constant volume is 12.5 J/K mol. How much...

Thanks alot!
4. ### Thermodynamics problem: help needed

Thermodynamics problem: help needed!!! Gas in a container expands at a constant pressure of 95 atmospheres. Find the work done by the gas if the initial volume is 5 L and the final volume is 10 L. Answer in units of Joules. I thought this problem was straight-forward, but I missed it. I...
5. ### Pressure and Net Force Question

I'm working on my homework, and I have finished all the problems save for one. I think I am on the right track, but I'm lacking just a few bits of info. Here is the question (it has 2 parts, I have answered the first part correctly, but cannot get the second part correct). Part 1...
6. ### Unit kN? What is it?

Thanks a lot stunner!
7. ### Unit kN? What is it?

So if I had an answer like 1054.47 N, it would be 1.05447 kN????
8. ### Unit kN? What is it?

Unit kN???? What is it??? I have a question asking for the tension in a cable that supports a beam. It asks me to find the answer in kN. What is kN? I know how to solve the problem, but I have no idea what this unit is.....What is k? Figure at the bottom in an attachment. For the...
9. ### Torque and Tension of two weights

bump....Still need help :grumpy:
10. ### Torque and Tension of two weights

Would that not leave me with the exact same initial equation that I started off with? I used that equation and came up with the wrong answer. Either I made a careless mistake (likely), I'm not understanding you, or there is something else wrong with the problem.
11. ### Torque and Tension of two weights

Guys - I'm back again :rofl: . I hate to have so many questions, but I really appreaciate all the help you guys give me. For this problem, I am having some problems with the clockwise/counterclockwise Torque rule. Anyways, let me give you the problem and work. Two weights attached to a...
12. ### Rotational speed versus linear motion problem

Its an online homework thing that our professor uses. For our classwork, we actually have to use correct significant digits, but the homework agency doesn't "believe" in significant digits. Therefore, they assigned an arbitrary number...6...for all answers to come in. It makes things easier...
13. ### Rotational speed versus linear motion problem

The place I turn in the homework to always wants the answers in 6 significant digits....not the correct amount ;).
14. ### Rotational speed versus linear motion problem

Ah...No need to convert to radians then? I just remember my prof. hammering into us to work with radians :D. The changes this causes, for those who look at this problem later are as follows: theta = 0.47822 radians time = 0.0043492 seconds Velocity = 211.763 m/s
15. ### Rotational speed versus linear motion problem

Wow, all that work, and I just missed such a little thing. Thanks Integral ;). It oftentimes takes somone else to point out the careless mistakes. I really appreciate the help.
16. ### Rotational speed versus linear motion problem

I'll do that and get back to you guys on whether or not it worked ;).
17. ### Rotational speed versus linear motion problem

The answer is supposed to be in 6 significant digits, which I answered the problem with. I just posted the numbers in their entirety here, in case I needed to use them to find the answer eventually. There is something else wrong with the problem unfortunately.
18. ### Rotational speed versus linear motion problem

Here is the question: The speed of a moving bullet can be determined by allowing the bullet to pass through two rotating paper disks mounted a distance 0.921 m apart on the same axle. From the angular displacement 27.4 degrees of the two bullet holes in the disks and the rotational speed...
19. ### I need help with a collision problem

I tried to apply those principles, but I wasn't able to put together the formulas correctly in time for the homwork's due date. Thanks for the help, though ;).
20. ### I need help with a collision problem

In a way, however, without the speed of either particle post-collision...I'm not sure how to set up an equation.
21. ### I need help with a collision problem

The question is as follows: A 4g particle moving at 30 m/s collides with a 0.99 g particle initially at rest. After the collision the two particles have velocities that are directed 27 degrees on either side of the original line of motion of the 4 g particle. What is the speed of the 0.99 g...