Recent content by SJC25

I need some help getting started on a few wave and sound problems. 1.)A closed organ pipe has a fifth harmonic frequency of 1230Hz at 20 degrees Celcius a) What is the length of the organ tube? b) What is the first harmonic of the pipe? c) If one end of the pipe were opened, what would be...

Thanks for the help. I am still having problems with 5 though. How can I find K to do the work energy theorem when I don't have a velocity? Shouldn't I use U=mgy if I am looking for increased gravitational potential energy? On 4b I have the same problem. How do I use the work energy theorem...

Okay ya'll. I am back with mor eproblems I need help with. I had 18 problems, and I need some guidence on 6 of them. 1) A skier, of mass 60 kg, pushes off the top of a hill with an initial speed of 4.0 m/s. How fast will she be moving after dropping 10 m in elevation? I am...

thank you!

Okay, I got #1, and #3. #2 is still dancing it's evil little dance on my grave. Am I doing this right? v^2=v(naught)^2+2a(x-x(naught)) (50m/s)^2=0+2a(90cm-0) 2500=2a(.9m) a= 1389m/s^2...

vsage is right. But I am assuming ox/reduct is far in your future (next semester, if even then for a non major chem class). All you need to remember is superscripts denote charges, subscripts denote numbers of, and there SHOULD have been a subscript after those parenthesis. Appears to be a...

HELP! I have 3 algebra based physics problems I need help starting. I don't want answers, just help picking formulas to use and such. 1) a fighter plane has an air speed of 200 m/s. A projectile is launched at 50 m/s in a forward direction, with a 30 degree angle relative to the plane's...

HELP! 3 physics problems that i am stuck on Help me out guys. I am in a college physics class and a week and a half into the class i am stuck. 1.) A bullet is moving at 244m/s. It hits a tree and penetrates 8.34mm. (A)What is the average acceleration as it slows? (B) Assuming constant...