With all due respect Dan, I don't find your input very helpful (although now having figured out the answer on my own I can see what you were driving at), but I did want to post to clarify things. In particular, after I posted this question I thought about it (as I fell asleep that night) and...
I hate to be a party pooper, but anyone who is generally interested in the concept of IQ and its usefulness should probably check out Stephen Jay Gould's book The Mismeasure of Man. His treatment of intelligence testing and its social applications is (in my opinion) excellent. He does a very...
The issue here is that there are bunch of easy-to-forget sign conventions that go along with the optics formulas. In particular: we are dealing here with a REAL image. Real images are ALWAYS inverted. Because the real image is inverted, it's magnification is technically -2, not +2. This...
Homework Statement
My question is in regards to a relatively simple problem:
A massless, ideal spring with a spring constant k hangs from the ceiling; it is originally neither compressed nor stretched. We attach a block of mass m to the spring. In terms of the mass of the block, the...