# Recent content by eestep

1. ### Refraction physics help

Homework Statement Light is originally traveling through air and then enters water with an index of refraction of 1.32. Angle in air at interface is 69 degrees with respect to normal. If thickness of water is 2.3 km, how long does it take in microseconds (1 x 10-6 s) to cross water? Hint: light...

3. ### RLC Circuit

Homework Statement At resonant frequency of 2,459 Hz for an RLC circuit, average power of circuit is 74 Watts when connected to a voltage source with a maximum voltage of 58 volts. If capacitance is 3 micro-Farads, what is maximum current, in amps, at 1,759 Hz? Answer is 2.14. Homework...
4. ### Magnetic Moment

Homework Statement A solenoid runs in z direction through x-y plane. As it passes through plane current is running counter-clockwise with an amount of I(t)=2.3 A/s2t2 (increasing over time counter-clockwise). Also, n=7 x 104/m for solenoid. A wire shaped as a square with sides of 1.2 meters...
5. ### B for Infinite Straight Wires

Homework Statement An infinite straight wire is located at origin of a coordinate system. It has a large current of 73 x 107 amps running positive z direction. A point charge of -4 micro-Coulombs is moving at 3 x 106 m/s in positive x direction at point x=1.9 m, y=4.5 m. What is magnitude of...
6. ### Electric Potential

Homework Statement A charge of +21.9 micro-Coulombs is placed at x=-3.3 m, y=0 m, a charge of -8.5 micro-Coulombs is placed at x=0 m, y=+3.8 m, and a charge of +15.6 micro-Coulombs is placed at x=+3.3 m, y=+3.8 m. If a charge of -15.4 micro-Coulombs is placed at origin, what is electrical...
7. ### Application to Physics

Homework Statement A cylindrical barrel, standing upright on its circular end, contains muddy water. The top of barrel, which has diameter 1 meter, is open. Height of barrel is 1.8 meter and it is filled to a depth of 1.5 meter. Density of water at a depth of h meters below surface is given by...

10. ### Improper Integral

Homework Statement Gamma function is defined for all x>0 by rule \Gamma(x)=\int0\inftytx-1e-tdt Find a simple expression for \Gamma(n) for positive integers n. Answer is \Gamma(n)=(n-1)! Homework Equations The Attempt at a Solution...
11. ### Surface Charge Density for Infinite Sheet of Charge

How do I calculate surface charge density of sheet on y axis?
12. ### Surface Charge Density for Infinite Sheet of Charge

Does it not cancel anyhow?
13. ### Surface Charge Density for Infinite Sheet of Charge

Homework Statement An infinite sheet of charge with a surface charge density of +7.8 micro-Coulomb/m2 lies on x axis (technically in x-z plane). Another infinite sheet of charge with an unknown charge density lies on y axis (technically in y-z plane). A positive point charge is placed in first...
14. ### Confined, Uniform, Electric Field

I appreciate the assistance!
15. ### Confined, Uniform, Electric Field

Homework Statement An electron is originally moving at 6.8 x 107 m/s in positive x direction as it enters a region of confined, uniform, electric field. Magnitude of field is 2.6 x 106 N/C in negative y direction and its length in x direction is 6.2 x 10-4 meters. If one ignores weight of...