Recent content by Kashuno

Woops, don't try and do physics half asleep!:rolleyes: Those first two errors aside, I think I see what angle I am supposed to use. The velocity of B_{1} is 45° from the x axis, but 75° from \hat{r}, since \hat{r} is along r, correct?

Homework Statement Find the magnetic forces acting on each electron in the attached image Homework Equations B = \frac{μ0}{4pi}*q*\frac{v x \hat{r}}{r^{2}} F_{m} = qv x B The Attempt at a Solution B_{1} = 10^{-7} * 1.6*10^{-19} *...

Wow! I can't believe I didn't see that! I was having a hard time finding an equation that incorporated percentages that I didn't even think of multiple equations. :rolleyes: Set it up and get two equations with two unknowns, solve and substitute, done. Thank you so much!

Homework Statement "A capacitor is being charged from a battery and through a resistor of 20kΩ. It is observed that the voltage on the capacitor rises from 10% of its final value to 90%, in 15 seconds. Calculate the capacitor's capacitance. t = 15s R = 20kΩ Vi = 10% of max Vf = 90% of max...