Recent content by idkgirl

Homework Statement A scientist notices that an oil slick floating on water when viewed from above has many different rainbow colors reflecting off the surface. She aims a spectrometer at a particular spot and measures the wavelength to be 750 {\rm nm} (in air). The index of refraction of...

Yeah, I figured it out. I think I was probably just entering things in my calculator strangely. Thankya ^^

Homework Statement Light from a sodium lamp (\lambda \; =\;589\;{\rm nm}) illuminates two narrow slits. The fringe spacing on a screen 150{\rm cm} behind the slits is 4.0{\rm mm} . Homework Equations I think I should use: d*(y/L) = m(λ) The Attempt at a Solution I did: d =...

Homework Statement A coin of mass m is at rest on a book that has been tilted at an angle θ with the horizontal. By experimenting, you find that when θ is increased to 13o, the coin is on the verge of sliding down the book, which means that even a slight increase beyond 13o produces sliding...

Oh cool! Thanks so much. I multiplied 1.8558 by 5 and the other number by 2 to get 9.28. I mean, I could multiply the one with 1.8558 by 2.5 to get 4.6398 secs, since by the time the longer pendulum swings the short one will have completed 2.5 cycles. but maybe the problem with that is that you...

the periods are 1.8558 (the one with a length of 85.5) and 4.6398 (the one with a length of 534.4). I think what I should do is 4.6398/1.8558 and then multiply the periods by a common multiplier, correct?

Homework Statement Consider the two “gigantic” simple pendulums with identical masses but with different lengths as shown below. Suppose they are released from rest from position A at the same time as shown. So you understand that they will not oscillate in harmony since they will have...