Recent content by JamesL

This is why a separate set of eyes is always helpful!

Not sure what I am doing wrong... Homework Statement A chemical reaction takes place in a container of cross-sectional area 100 cm2. As a result of the reaction, a piston is pushed out through 20 cm against an external pressure of 567 torr. What is the value for w for this reaction...

A concave lens forms a virtual image .5 times the size of the object. The distance between the object and the image is 7.9cm. Find the focal length of the lens. Answer in units of cm. ------------ i suppose what is confusing me is whether or not the object itself is virtual. i don't...

What am i doing wron guys? "The output of a generator is given by: V = (Vmax)sin(wt) ----> where "w" is omega If after .0137 seconds, the output is .25 times Vmax, what is the largest possible angular velocity "w" of the generator? What is the next time (value of "t") for which the...

eek... i didnt think this problem was that difficult. no one has any idea?

Problem concerning magnetism. **Please help A 13 ohm square loop, whose dimensions are 4m x 4m, is placed in a unifrom .14T magnetic field that is directed perpendicular to the plance of the loop. The loop, which is hinged at each vertex, is pulled as shown (it is being tugged from the...

solved. nevermind

A light bulb and a solenoid are connected in series to a battery. An iron rod is thrust rapidly into the solenoid and later rapidly removed. The bulb: 1)No change in or out 2)No change in, brightens out 3)Dims in, Dims out 4)Brightens in, dims out 5)Brightens in, brightens out 6)remains...

"A conductor consists of a circular loop of radius .0584 m and straight long sections. The wire lies in the plane of the paper and carries a current of 9.68 A. Determine the magnitude of the magnetic field at the center of the loop. Answer in units of T." ---------- Perhaps I am not...

the online homework service requires a number of decimal places so i don't think that's it... that looks right to me too... i wonder what I am doing wrong.

ok. i understand that. perhaps you can look at my work and tell me if I am doing something wrong? The capactitor is 1.5 x 10^-6 Fs. I(t) = 2.23142119 x 10^-6 A q(t) = 4.77389 x 10^-6 C these quantities are correct. The voltage from the battery is 10.1 Vs... and at the other end of...

wouldnt power delivered be different in an RC circuit? this is a 3 part problem. in the first two parts i had to find the charge on the capacitor and the current through the resistor of this simple RC circuit (simple as in, 1 loop, 1 resistor, 1 power source, 1 cap). i asked about the...

trying to find the power delivered by a battery in a simple rc circuit. what is the proper way to go about doing this? i have caculated the current at the given time, and the charge on the capacitor at the given time... how do these tie into the power delivered?

thanks. i just figured that out. i was confused... didnt understand that it was basically asking for the Req.

anybody know?