"Singly ionized"? What the...?
I have a problem where I'm trying to figure out the spring constant of a DNA molecule whose ends become "singly ionized" and so it contracts. The only problem is, I don't know what the question means by "singly charged." I would assume that it means that each...
AP Physics Help--Emergency
My physics teacher sometimes gives out rediculously difficult worksheets. I'm having trouble with one problem in particular:
A breathing monitor girds a patient with a mercury-filled rubber tube and measures the variation on tube resistance. The tube has an...