Recent content by bob12345

Homework Statement A 2.5 cm length of tungsten filament in a small lightbulb has a resistance of 0.041 . Find its diameter. (The resistivity is 5.6 × 10−8 · m). Answer in units of mm. Homework Equations R=P(L/2pi*rsquared) The Attempt at a Solution i keep getting 20856 m...

i didnt think so because i converted the length to meters..

the atomic mass is 196.97 bt how do you get it to moles?

yes it was 3.32 and now ill try working it out how you said

Homework Statement A 2.5 cm length of tungsten filament in a small lightbulb has a resistance of 0.041 . Find its diameter. (The resistivity is 5.6 × 10−8 · m). Answer in units of mm. Homework Equations R=p(L/pi*r^2) The Attempt at a Solution i have reworked the equation to...

Homework Statement If 3.32 kg of gold is deposited on the negative electrode of an electrolytic cell in a period of 10.98 h, what is the current in the cell in this period?Assume that each gold ion car ries one elementary unit of positive charge. Homework Equations i don't know what...