Recent content by Dtails

769491 was the latest one. I take care of the coulomb and meter conversions when I punch through the calculations, so I'm not sure what exactly is up with this problem. Since the answer is rather large it might just be anal about significant figures of some sort since it doesn't define any...

You'd be amazed just how bad my prof is. We haven't. And the problem is the problem word for word. Just told it has a uniform charge density, and to find the electric field. I did try E=σ/2ε. Shot down my answer twice with it. :/

Homework Statement A nonconducting wall carries a uniform charge density of 13.62 μC/cm2. What is the electric field 5.7 cm in front of the wall? Answer in units of N/C. Homework Equations Gauss's law...? The Attempt at a Solution Honestly, this bugger's got me scratching my...

Hah, I fail epiclly at Trig. xD Sin29 worked like a charm, on the last try, too. Thanks, man.

Well I hope I know that xP But yeah. From your triangle, the 29 degree shoots up to the top of the triangle, and the 61 becomes the most useful for a sin substitution. hence 5*9.8/b=sin61, so 5*9.8/sin61=b. :/ Not sure if I'm screwing up somewhere.

Just tried the triangle, just gave me the same answer as the vector resolution. :/ 5*9.8/sin61 = 56.024349 Which apparently is not the answer. This is why it's annoying! The intuitive answers are always wrong!

Homework Statement A solid sphere of radius 1 m and mass 5 kg is placed in a wedge with θ = 29 ◦ The inner surfaces of the wedge are frictionless. The acceleration of gravity is 9.8 m/s2 . Determine the force exerted by the wedge on the sphere at point B. Answer in units Figure, ASCII style...

Sorry, but I got it. I believe the solution I used was 1/3mL^2+2/5mR^2 + MD where M is mass of the sphere and D is the distance from it to the center of the sphere. It does seem counter intuitive, but the way the system's set up is that it APPEARS the sphere is rotating as its moving with the...

Homework Statement A cylindrical rod 32.2 cm long has mass 0.919 kg and radius 1.54 cm. A 8.89 kg ball of diameter 11.3 cm is attached to one end. The arrangement is originally vertical with the ball at the top and is free to pivot about the other end. The acceleration of gravity is 9.8 m/s2 ...