Recent content by ShelbyMcD

Thank you!

I didn't think I could put it in homework because it doesn't involve equations, but I got a warning so I did the best I could to repost and do it as the rules say.

Homework Statement I need to find out which freezes faster--hot or cold water--without doing a lab. Just by thinking and considering laws and theories and properties we have learned about. Homework Equations N/A The Attempt at a Solution It seems like it would be cold water since...

Because I have to write about it and think about it, not do a lab on it. I just need some ideas and explanations.

So this isn't homework, but it is for a class and I don't know how to go about this... I have to figure out if hot or cold water freezes faster. Any ideas?

Thank you so much for the help! Good night :)

On each separate one, in order to pull them apart. So I find the area of one and apply it to the equation?

So P=F/A, and I only have the radii of the hemispheres... do I use that to find the area of one hemisphere or both and add them together?

F=ma? But I don't know the mass. Or maybe P=F/A. But I already have the pressure, which is 760mm of Hg.

Thank you! Well, that's why I came here... because none of this added up to me haha. Do you know how to help?

Homework Statement Find the number of kilograms needed to pull apart evacuated Magdeburg Hemispheres whose radii are 25.0 cm when the barometer reads 760mm of Hg. I really don't know where to start. Could someone walk me through it? Homework Equations Unknown. The Attempt at a...

Wow... I can't believe I didn't think of that. Thank you!

Homework Statement A spring is stretched by a force of 0.80n a distance of 0.012m. Find how far it will stretch when the force is 0.54n. One problem is that I don't know how to find k. Homework Equations F=kΔd The Attempt at a Solution F=kΔd F=k(0.012m) What is k?