Recent content by JoeyCentral

Well I thought about it and I honestly think that distance is always used in formulas. I am not sure if there are many formulas out there that care about displacement unless you were dealing with vectors.

But does the letter R always mean distance in a formula?

So no matter what position the object is to the point of interest, the difference between the two object's position will always be positive?

This references a specific problem in my Physics class in relations to electrical potential and electrical fields, but I kind of want a more general answer in terms of physics. So obviously, I know that distance is always positive. However, when I was given a problem to solve, there were 3...

Well, I feel pretty stupid right now. Nonetheless, I feel a little more comfortable with thermodynamics, so that is good I guess. I apologize about all the posts beforehand. I was kind of under pressure I have my exam coming up next week and I kind of panicked a little bit.

Well that explains why my answer beforehand was slightly below the correct answer. Now, I just solved for the right answer. Thanks a lot for the help. In the future, I need to calculate the overall mass of the solution by taking the sum of all the masses given in the solution, and then follow...

Wait...is the mass I'm multiplying supposed to be the mass of the water?

Look, I understand you guys want people to figure it out themselves and not have others do their own HW, but you see, if I actually had a clue on what to do, I wouldn't be posting this problem on here. Hell this is the first time I have ever even used the HW help on this website because most of...

Why?

1.87g of solution.

Change of heat: 33.10 celsius - 22.00 celsius = 11.10 celsius That is the change of temperature of the solution. The problem specifically said the specific heat of the solution is 4.18. Also, .0109 moles * [((137.327+2(16+1.008) g / 1 mol Ba(OH)2] = 1.87 g Ba(OH)2 I don't see any need to...

I triple checked the calculations and the wording, and I don't see what the problem is. The specific heat is the for aqueous solution. It is pretty obvious that the limiting reagent would involve the dimensional analysis from the Barium just by looking at the molar mass of that and water, and...

Homework Statement When 1.50g of Ba(s) is added to 100.0g of water in a container open to the atmosphere, the reaction shown below occurs and the temperature of the resulting solution rises from 22.00 celsius to 33.10 celsius. If the specific heat of the solution is 4.18J/g*celsius, calculate...

Yeah, I understand how the term moment is used interchangeably with torque and etc. I am primarily talking about this particular force diagram in the attachment of the OP.

Thanks for the reply! Yes, the red marker indicates the correct answer. When he was showing us the correct answer in class, he supposedly subtracted 180 degrees from the angle between the tension force and the rod. However,at the same time, that makes me ponder how I got -90 degrees as my torque...