Field Theory Answers

What is a dual EM tensor?

Explain Fary's theorem for quantum electrodynamics.

How would psi_bar gamma_mu psi transform under parity transformation?

Two people, A and B, are sitting on a bench 0.70m apart. Person A has a mass of 60kg and person b experts a gravitational force of 8.0 x 10^-7 N on person a. Calculate the mass of person b.

Using Gauss’ Theorem calculate the flux of the vector field F = x i^ + y j^ + z k^ through the surface of a cylinder of radius A and height H, which has its axis along the z-axis and the base of the cylinder is on the xy-plane.

The unit of ∇×H is

A force of 3000 N moves a mass of 500 Kg a distance of 8m in 15 seconds. How much work has been done?

Obtain the value of the constant c for which the function u(x,t) = cosαcxsinαt is a
solution of the wave equation :
d^2u/dt^2=c^2(d^2u/dx^2)

Using Gauss’ Theorem calculate the flux of the vector field F ˆ
i ˆ
j kˆ = x + y + z r through
the surface of a cylinder of radius A and height H, which has its axis along the z-axis
and the base of the cylinder is on the xy-plane.

Show that for two scalar fields f and g:
∇.[∇f ×( f ∇g)]= 0