Can someone be a little more specific... I am getting really frustrated. This is the last question on the last homework assignment for the year and I keep getting it wrong. Not to mention I don't have that many tries on it left. Please help me!
Here is the question:
8) [1.0/3.0] 1.6 kg of water at 34oC is mixed with 2.0 kg of water at 58o. in a well insulated container. a) What is the final temperature of the water (in degrees Celsius)? b) What is the approximate change of entropy? (Use the average temperature for the entropy...
Can someone please breifly explain to me how a closed PV graph works? ...In particular how to determine whether positive or negative work had been done within the system?
I really need help... and no one can seem to help!
Here's the question: A hot-air balloon achieves its buoyant lift by heating the air inside the balloon, which makes it less dense than the air outside. Suppose the volume of a balloon is 1794 m3 and the required lift is 3139 N (weight of...
A copper rod and an aluminum rod of the same length and cross-sectional area are attached end to end. The copper end is placed in a furnace which is maintained at a constant temperature of 279oC. The aluminum end is placed in an ice bath held at constant temperature of 0.0oC. Calculate the...
I'm sorry, but my professor doesn't really teach very well and I don't even know where to start even with your very thorough help... can you be a bit more specific? Thanks.
A person makes a quantity of iced tea by mixing 559 g of hot tea (essentially water) with an equal mass of ice at its melting point. If the initial hot tea is at a temperature of 94 C, what are the (a) final temperature of the ice tea (in oC) and (b) mass of the remaining ice? what are the (c)...
Thank you but...
Hahaha... I'm sorry, but now I'm just really confused. I tried making the two equations equal, but I got a very very small number. Can someone please clarify for me? I appreciate all your help so far.
https://www.physicsforums.com/showthread.php?p=543646#post543646
I asked this question earlier and I didn't get any significant help, atleast beyond what I already knew. I do not know how to calculate this, nor do my classmates who I have seen also posed this question to the forum. Please...