I, too, noticed that they summed to 90. Well, the entire problem, minus the EE info, is:
I have an equation that makes an elipse:
E = x[10cos(wt + 30°)] + y[30cos(wt)]
We can make wt our variable. x and y are the vector directions, I believe. (they have hats ^ above them)
gamma is...
Homework Statement
I've solved a problem in my engineering homework to a point where I have the following data:
ψ = arctan(3) = 71.57 (degrees) , inverse tangent of 3
δ = 30 degrees
solve for gamma and chi (χ):
tan(2gamma) = tan(2ψ)cos(δ)
sin(2χ) = sin(2ψ)sin(δ)
Homework Equations...
Homework Statement
I am in dif eq, but just need to know how to separate a power.
separate e^(xi) into the form a-bi, where x is a constant (in my homework, x is 4pi/3, but that's not too relevant)
i is the imaginary number sqrt(-1)
Homework Equations
I don't know if there is some simple...
Homework Statement
At a particular instant, charge q_1 = 4.80×10^−6 C is at the point (0, 0.250m , 0) and has velocity v_1=(9.2*10^5 m/s) i_hat. Charge q_2 = −2.50×10^−6 C is at the point (0.150m , 0, 0) and has velocity v_2 = (-5.3x10^5 m/s) j_hat.
At this instant, what is the magnetic...
It asks for Farads, and to put everything as XXX*10^Z. I have done so. I've used Mastering Physics all last year, so I know how to deal with the inputs.
Is there some special integral or another equation that I could try?
P.S. The way I'm doing the problem is exactly like the example in...
A parallel-plate air capacitor is made by using two plates 16 cm square, spaced 3.7 mm apart. It is connected to a 12-V battery. What is the capacitance? What is the charge on each plate? What is the electric field between the plates? What is the energy stored in the capacitor?
What I...