Recent content by yo_man

Homework Statement Three electrons form an equilateral triangle 1.10 nm on each side. A proton is at the center of the triangle. What is the potential energy of this group of charges? Homework Equations potential energy = U = kq1q2/r The Attempt at a Solution So, I was...

Homework Statement Two positive point charges are 5.20 cm apart. If the electric potential energy is 71.0 microJoules, what is the magnitude of the force between the two charges? Homework Equations potential energy = U = qV E=kq1q2/r^2 F=qE The Attempt at a Solution I've...

is it (2(lambda_2)L)/d = ((4+.5)(d/8)L)/d

so I did that and it's not right. so then I tried using 0.12 x 10^-3 instead of 0.06x 10^3 and I solved for x, and it's not right...

so I do 633 nm/1 cm --> of course I will convert to uniform units and half angle is 0.5 cm/x but how do I use these? and should i be using the 1 cm or the .12 mm?

Homework Statement You want to photograph a circular diffraction pattern whose central maximum has a diameter of 1.0 cm. You have a helium-neon laser (lambda=633 nm) and a 0.12-mm-diameter pinhole. How far behind the pinhole should you place the viewing screen? Homework Equations...

Homework Statement A laser with wavelength d/8 is shining light on a double slit with slit separation d. This results in an interference pattern on a screen a distance L away from the slits. We wish to shine a second laser, with a different wavelength, through the same slits. What is the...

Homework Statement An oscillator with a mass of 500 g and a period of 0.300 s has an amplitude that decreases by 1.40% during each complete oscillation. If the initial amplitude is 11.4 cm, what will be the amplitude after 38.0 oscillations?

different problem okay, I have a question about a different problem A 150 g mass attached to a horizontal spring oscillates at a frequency of 1.60 Hz. At t =0, the mass is at x= 5.40 cm and has v_x =- 17.0 cm/s. Determine: the amplitude and the phase constant. I have already figured...

On your first trip to Planet X you happen to take along a 150 g mass, a 40-cm-long spring, a meter stick, and a stopwatch. You're curious about the acceleration due to gravity on Planet X, where ordinary tasks seem easier than on earth, but you can't find this information in your Visitor's...