Recent content by crazuiee

Homework Statement A magnet produces a 0.40 T field between its poles, directed horizontally to the east. A dust particle with charge q = -8.0×10-18 C is moving vertically downwards with a speed of 0.30 cm/s in this field. Whilst it is in the magnetic field, the dust particle is also in an...

I get it now! Thanks for working this through with me!

Oh i see so because they're in a series they each have 3 going through them, but the current coming out at the end is still 3?

Okay, so for R4 I get a voltage drop of 89.98 so voltage across R2+R3 would be 60.02? And then if i divide that by the total resistivity of R2+R3 i get 3.001, and since there's two i find that each resister will have 1.5 resistance?

So the current through R4 would be the sum of the current through R1, R2 and R3? So could i just divide the current of 8.998 into 2? So that R1 will have a current of 4.499 and then divide 4.499 into 2 again so that R2 and R3 will have a current of 2.2495 each?

using the resistivity of R2 and R3 i multiplied it by the total current to find the potential drop and subtracted it from the emf voltage

Would it be 120.2 V?

Homework Statement In the circuit the emf is 150V connected across a resistance network. Each resistor has a value of 10 ohms. What is the current through R2? Homework Equations R=V/I The Attempt at a Solution I found that the resistance of R2 and R3 because they're in a series is...

Homework Statement A positive charge of +q1 is located 3.00m to the left of a negative charge -q2. the charges have different magnitudes. a) on the line through the center of the charges, the net electric field is zero at a spot 1.00m to the right of the negative charge. Determine the relative...

So q1= +16 and q2= -1 ? Also there's a part of the question that asks to locate two spots where the potential is zero, in relation to the negative charge, any ideas how to find it?

would the ratio just work out to be the ratio of the distances? so 4/1?

Homework Statement A positive charge +q1 is 3.00m to the left of a negative charge -q2. The net electric field is zero 1.00m to the right of the negative charge. Determine the relative magnitude of the charges in a ratio q1/q2 Homework Equations E=kQ/r^2 The Attempt at a Solution...

Would I set the potential energy to the work and solve for electrical potential energy so U=-W U=kq1q2/r

Homework Statement The nucleus of a Helium atom contains 2 protons which are 1.0fm apart. How much work has to be done by an external agent to bring the two protons from an infinite separation to a distance of 1.0fm. Homework Equations F=k|q1||q2|/r^2 W=F*r The Attempt at a...

yea...that means nothing to me sorry..