Recent content by tnbstudent

Thanks for the help. I used the link from jambaugh and that equation helped. I got a, but it still won't accept b&c. It is really picky about significant digits.

Heisenburg Uncertainty Principle - Seems like an easy question?? Homework Statement The position of a 900 kg boulder's center of mass has been determined to within an uncertainty of 1.0 nm. (a) What is the minimum uncertainty in the boulder's velocity? (b) Repeat the calculation, but for a...

Thank you!

Question: What is the highest order of interference maximum that can occur when monochromatic light with a wavelength of 560 nm illuminates a diffraction grating with 4000 lines/cm? Attempt: I thought this seemed really easy, but my answer was incorrect. λ=560nm Since there are 4000 lines...

Thanks for your help. I think the book is just off by one decimal place. I did the equation using the chain rule and I got 1.11e-4 which was wrong... so I tested e-3 and it was correct. Either way - I'm glad I understand how to do it. Thanks again

Thanks This definitely gets the dL/dt in the equation which I was missing. When I write B in terms of L I get: B=μ*I*t/l (where t is the number of turns) dB/dL = μ*I*t*(-1/l^2) Is the length in this the original (.20m) or (.20m*8.0m/s *10^-2) Our book gives answers for most questions but...

Homework Statement A wire loop with area 8.00 cm2 is placed inside a 20.0 cm long solenoid with 5.00×10^4 turns that carries a current of 1.10 A. The loop is concentric with the solenoid. If the length of the solenoid is stretched so that its length increases at a rate of 8.000e-2 m/s, with...

Thanks - I'm sure you are correct, but we will not get to integrals until a later section. I would like to get the answer using the tools from this section which are the formulas I listed above. Thanks again - I should have been more specific with my question.

Homework Statement A wire circle of radius 0.050 m is embedded in a solenoid of length 0.20 m with 1000 turns that carries a current of 0.50 A. If a vector that is normal to the plane of the circle makes a 40° angle with the axis of the solenoid, what is the magnetic flux through the loop...

Thanks - I had a typo. I actually have my formula as F=μ*I1*I2*l/2∏r where l is the length of the wire Once, I clear up my brain lapse and use I^2 instead of 2I I get 101,349A. I only have one try at this one, so I'd like to make sure this is right before I submit it Thanks again for the...

I have a homework question that I am having some trouble with. This is my first post - so be easy on me. Question: A weight-lifter is able to hold a barbell with a maximum total mass of 205 kg above his head. A physicist uses him to conduct a classroom demonstration, asking him to hold one...