Recent content by Squall

Homework Statement This is the statement out of a paper: Slurry 10 grams of ZnS with 3mL of .2N Cu(CH3COO)2 solution (corresponding to 0.6 atom % Cu) and 1.7 mL of .2N NH4Cl solution (corresponding to 0.34 atom % Cl) So my question is how did they calculate the .6 at. % and .34 at. %...

Homework Statement Calculate the volume of 0.116 M HCl(aq) required to neutralize the following solutions. all the hydroxide ions in 25.0 mL of 0.215 M KOH(aq) 1. What is the molarity of Cl - ions at the stoichiometric point? Homework Equations HCl + KOH --> KCl + H2O The...

Thank You, I figured it out

Tell me if I'm headed in the right direction since we are dealing with an electron I know the charge therefore should be able to figure out the electric field using the F=qE formula. |F|= 5.6e-14N q= -1.6e-19C E=350,000 N/C

I am sorry but can you tell me how I would go about calculating the strength of the field. I assumed you would have to know the charge first to figure out the strength.

Homework Statement A solid metal ball of radius 1.5 cm bearing a charge of -16 nC is located near a hollow plastic ball of radius 2 cm bearing a uniformly distributed charge of -4 nC on its outer surface. The distance between the centers of the balls is 8 cm. What is the electric field...

When your calculating the speed at which he must move remember that he is already 10 meters away, just a thought.

Well if you plan on using your graphing calculator: you simply graph the function and use the calculators min/max function to find the x value at which it reaches maximum height, which corresponds to the peak of the parabola. Or if you know some calculus you can always take the derivative of the...

Homework Statement In a cathode-ray tube (CRT), an electron travels in a vacuum and enters a region between two "deflection" plates which have equal and opposite charges. The dimensions of each plate are L = 13 cm by d = 4 cm, and the gap between them is h = 2.5 mm. During a 0.001 s...

Oh yes your right, I just kept converting the cm to m wrong, putting an extra zero in front of it like they were mm or something. Thank You so much it really helps having someone else look at this. I knew I had to be making some stupid mistake.

The components of the positions are in centimeters. (cm)

Homework Statement At a particular moment, three small charged balls, one negative and two positive,are located as shown in the figure. q1 = 3 nC, q2 = 7 nC, and q3 = -5 nC. What is the electric field at the location of Q1, due to Q2? y q1 | | | q2______q3____x Okay...

Oh I think I figured out where I went wrong I forgot to cube d,

Homework Statement A dipole consists of two charges +q and -q, held apart by a rod of length s, as shown in the diagram. If q = 4 nC and s = 2 mm, what is the magnitude of the electric field due to the dipole at location A, a distance d = 5 cm from the dipole? The diagram shows point A...

Yes the |r|^2 was dubious After reworking that I got |r|=1.6882e-8 Plugging this back in I get E=[9e9*(1.602e-19)/(1.6882e-8)^2]*< -0.5923, 0.4739, 0.6516> =<2996700,-2397300,-3296300> Is this a more reasonable answer?