Recent content by crh

Homework Statement What is the speed of a pion if its average lifetime is measured to be 4.91E-8s? At rest, its average lifetime is 2.60E-6s. What is the particle's lifetime at rest? Homework Equations \Delta t = \Delta t0 / \sqrt{1-(v2/c2} The Attempt at a Solution I don't...

R(x) BW(y) 50 457 100 636 200 937 300 1296 400 1614 500 1938 600 2290 800 2925 1000 3630 LINEST function: 3.322306649 288.8765265...

I am using Excel and plotting a line of best fit for Resistance vs. Bandwidth. I used the LINEST function to get my values, and it shows that it would cross the y-intercept at around 288 Hz. I am just wondering why when using resistance vs bandwidth it would never cross at the origin. That is...

Finding magnetic flux--it's all worked, just have one question Homework Statement A 15-cm-diameter circular loop of wire is placed in a 0.60-T magnetic field. Enter scientific notation as 1.23E4. When the plane of the loop is perpendicular to the field lines, what is the magnetic flux...

Homework Statement What is the magnitude of the force per meter of length on a straight wire carrying a 6.70-A current when perpendicular to a 0.89-T uniform magnetic field? What if the angle between the wire and field is 45.0°? I know how to do the whole thing, I just can't get my...

thank you, I figured it out with your help.

Homework Statement In the circuit shown, the 33-ohm resistor dissipates 0.50 W. What is the battery voltage? http://phga.pearsoncmg.com/phga2/web/Giancoli6e/Public_Html/Chapter19/Aadxevw0.gif Homework Equations I am pretty sure that I use the equation V=IR, but I am not for sure...

Homework Statement An electron starting from rest acquires 5.4keV of KE moving from point A to point B. 1. How much KE would a proton acquire, starting from rest at B and moving to point B. 2. Determine the ratio of their speeds at the end of their respective trajectories. Homework...

oh it needs to be -230V.

Are you meaning scientific notation?

Ok I think I figured it out. Tell me if I am wrong. W = -qV, but V is potential E (PE), so therefore V = (PE2-PE1) so... W = -(1.60E-19C)(-80V) = 1.28E-17 J and = -(1e)(-80V) = 80eV did I go about this right?

Homework Statement How much work does the electric field do in moving a proton from a point with a potential of +155V to a point where it is -75V. Express your answer in both joules and electron volts. Homework Equations W = -qV The Attempt at a Solution I know that q=(1.6E-19)...

Thanks!:-p

I guess I am just not understanding. Can you help explain it to me. For one I didn't think that the magnitude changes with distance. I thought it all depended on the amount of charge on a point. This means that if the charges stay the same that it does remain constant along a line of force...

Homework Statement I am needing help with just a conceptual question. I am wondering how the field magnitude varies with the distance between the field lines and if it remains constant along a line of force. Homework Equations I don't think I use an equation. Maybe Coulomb's...