Recent content by azolotor

Homework Statement Find the resultant of the superpostion of two harmonic waves in the form E=Ecos(α-ωt) with amplitudes of 3 and 4 and phases of π/6 and π/2 respectively. Both waves have a period of 1s. Homework Equations ω=2πf = 2π/t The Attempt at a Solution I first...

Thanks so much! Much clearer now.

Could someone please give me an explanation of what we mean we say phasor please. We went over phasors in class today and I understood all the manipulations we were doing for superposition but my professor mentioned phasors and never said what they were. I have looked up several definitions but...

I solved it, but thanks to those who may have read it. For those that are curious you use the trig identity sin(u+v) = sin(u)cos(v) + sin(v)cos(u) and from there it is simple algebra

A harmonic wave traveling in +x-direction has, at t = 0, a displacement of 13 units at x = 0 and a displacement of -7.5 units at x = 3λ/4. Write the equation for the wave at t = 0. Homework Equations The equation for a harmonic wave is r = asin(kx-vt+θ) a being the amplitude k...

Two 3.00-μC charges are at the ends of a meter stick. Find the electrical potential for the center of the meter stick. V=kq/r I just want to confirm my answer here. What I did is solve this for both charges in the equation above using r = 0.5m q= 3.00 uC. So I factored out k/r...

How much energy is necessary to place three charges, each of 2.0 μC, at the corners of an equilateral triangle of side 2.0 cm? This is in the chapter all about electric potential so I think I have to use the voltage equations in some way. V = Kq/r u= qV I am honestly unsure of...

We haven't learned about arrays yet either so I am unsure of how to set one up exactly. I apologize for making this more difficult but could you break down your explanation a little bit more for me. I am having trouble understanding

Write a program that will read a line of text as input and then display the line with the first word moved to the end of the line. For example, a possible sample interaction with the user might be. "Enter a line of text. No punctuation please. java is the language I have rephrased that line...