Recent content by beeteep

Looks like I was using the wrong formula. I changed to I = (V0/R)*e-t/RC and was able to get the correct answer.

Or what I think you may be asking (31V-20V) = 31(1-e-t/RC)

20 = 31(1-e-t/RC)

Homework Statement Consider the circuit How long after the switch is closed does the voltage across the resistor drop to Vf = 20V. Answer in units of s. Homework Equations Tc = RC Q=Qm(1-e-t/RC) The Attempt at a Solution [/B] RC = .0003026 11 = 31(1-e-t/RC) .3548 = 1-e-t/RC 1.3548 =...

I didn't know there was a difference between converting between cm2 and m2. I'll need to do a little more digging on how to properly convert between those, but you are correct. That was my issue. Thanks for your help!

Homework Statement A parallel-plate capacitor has a plate area of 18.5 cm2 and a capacitance of 4.8 pF What is the plate separation? The value of the permittivity of a vacuum is 8.8542 x 10-12 C2/N⋅m2 Homework Equations C = κε0 (A/d) The Attempt at a Solution 4.8x10-12 =...

Some heroes don't wear capes. :smile: Thank you so much for your help!

OK. I think I see what you're saying. According to the problem statement, since the vyi is given and there is no force acting in the y-direction, vyf=vyi. Then I'd calculate the vxf with vxi=0 and include the acceleration for .4s which would give me two components to a vector, right? With that...

Most of the problems I have worked have been μC but I just double checked and this problem definitely says mC.

The system is supposed to count your answer correct if you're within +/- 1% of the correct answer, so I err on the side of caution and put in every digit I have since it did not specify how many significant figures it wanted.

Homework Statement A particle of mass 7.3 × 10−5 g and charge 24 mC moves in a region of space where the electric field is uniform and is 6.3 N/C in the x direction and zero in the y and z direction. If the initial velocity of the particle is given by vy = 4.1 × 105 m/s, vx = vz = 0, what is...