Recent content by wildredhead

Homework Statement In converting electrical energy into light energy, a sixty-watt incandescent light bulb operates at about 2.2% efficiency. Assuming that all of the light is green light (wavelength approximately 5500 Å), determine the number of photons per second given off by the bulb and...

Homework Statement The capacitor in an circuit is initially uncharged In terms of R and C, determine the time required for the charge on the capacitor to rise to 50% of its final value. In terms of R and C, determine the time required for the initial current to drop to 10% of its...

SO part A is the slope = -1/2? But when I do tan^-1 (2/4) I still get 26.6. What am I doing wrong?

I think I uploaded it now. Sorry! It is an attachment

Homework Statement A given system has the equipotential surfaces shown in the figure What is the magnitude of the electric field? What is the direction of the electric field? (degrees from + x axis What is the shortest distance one can move to undergo a change in potential of 5.00...

the distance between the spheres would be something like the Lsin(theta) + d. Right? I use this in the Fe calculation... Fe= kq2q/Lsin(theta) +d. So I then use that as my x component for my tension force. Then the expression for mass is just g/F =M? I totally should have taken physics 2 right...

Homework Statement A small sphere carrying a charge of q with mass m is suspended from point A by a massless thread of length L, as shown in the figure. A second sphere carrying a charge of 2q with mass M is suspended from a fixed rod from point B. The distance between A and B is equal to...