Starting with Maxwell's equations show that the magnetic field
satisfies the same wave equation as the electric field. in
particular, that is, too, propagates with the same speed.
2) Consider the Lorentz transformation that maps (x,t) into (x',t'), where t and x are both
in time units (so x is really x/c) and all speeds are in c units also.
a) Show that the inverse of the Lorentz transformation at v is the same as the Lorentz
transformation at -v. Why is that required?
b) Show that x^2 - t^2 = x'^2 - t'^2, i.e., that x^2 - t^2 is invariant under Lorentz transformation
A mechanical wave is given by the equation: y(x,t) = 0.5 cos
(62.8x – 15.7t) , Find: (1) Amplitude, frequency, wavelength? (2)
The velocity of the wave? (3) The maximum velocity of the
vibrations? (4) Write down the equation in the opposite
direction?
Consider the following one-dimensional partial differentiation
wave equation. Produce the solution u(x, t) of this equation. 4Uxx
= Utt 0 < x 0 Boundary Conditions: u (0, t) = u (2π, t) = 0,
Initial Conditions a shown below: consider g(x)= 0 in both
cases.
(a) u (x, 0) = f(x) = 3sin 2x +3 sin7x , 0 < x <2π
(b) u (x, 0) = x +2, 0 < x <2π
1. What is the highest value of x that satisfies this equation x(x+4) = -3
A. -1
B. 0
C. 1
D. -3
2. If x2 - 9x = -18, what are the possible values of x?
A. -3 and -6
B. -3 and 6
C. 3 and -6
D. 3 and 6
3. What polynomial can be added to 2x2 - 2x+6 so that the sum is 3x2+ 7x?
A. 5x2+ 5x+ 6
B. 4x2+ 5x+ 6
C....