Recent content by miaou5

Yes! Thank you so much, this helps tons. A huge thank you again!

Homework Statement There are two locations for the lens along the optical bench that will focus an image on the screen. Find one of these locations. Once you have the image in sharp focus, take measurements for: the object distance, do, the image distance, di, and the height of the image, hi...

Thank you all so much! That makes a lot of sense, and I will include Lenz's law as well in my answer. A big thank you again!

Homework Statement When putting a magnet into a solenoid, under what conditions is a current generated? The Attempt at a Solution In order for a current to be generated, the magnet needed to be moving as it passed through the solenoid. This is due to Faraday’s law, which states that an...

Thank you so much!

Homework Statement What would the electric field lines / equipotential lines look like between point charges that are set up with potentials of 20 volts and 30 volts versus point charges that are set up with potentials of 0 volts and 10 volts? The Attempt at a Solution At first I thought the...

Thank you so much Doc Al! [Ah, finally the problem makes sense!]

Homework Statement http://img854.imageshack.us/img854/1828/physicssprings.png Two identical masses on a frictionless surface are attached to two walls by springs, each with a force constant k1, and to each other by a spring with force constant k2. (See figure, where system is at...

Homework Statement The diagram is of a circuit with 2 resistors in series (1 ohm and 2 ohms) connected to 2 batteries (a 9 V battery and a 12 V battery). The question asks, how much energy is provided by the 12-volt battery in 3 seconds? Homework Equations Power = IV = I^2R = V^2/R I =...

I get it now! Thanks so much to both of you. Whew, thinking about these things can be a real doozy sometimes :-p

Homework Statement This is just a more generalized question, and not really about a specific value. The question was regarding torque, and had a man standing on a ladder like so. The only force (exerted by the man on the ladder) that provided torque was indicated to be mg, but I don’t really...

So I know the law of energy conservation applies when dealing with electric force, but I don't quite understand what electric PE is. From my understanding of energy conservation, Electric PE (initial) + KE (initial) = Electric PE (final) + KE (final) (ignoring gravity) and thus, KE (final)...

From some of the questions I'm encountering my text, it seems like the writers are implying that there always needs to be a difference in pressure for a fluid to accelerate (by this I mean a difference between the Pi and Pf values on either side of Bernoulli's equation). But is this really true...