Field Theory Answers

An archer shoots an arrow at a 75 m distant target; the bull’s-eye of the target is at same height as the release height of the arrow. If d = 75 m and v = 37 m/s. At what angle must the arrow be released to hit the bull’s-eye if its initial speed is 37m/s?

when a charg experiences a force, there will be ----- field develop a) electric b) magnetic c) both

How can we show the Lorentz symmetry is not anomalous?

i consider a lagrangian with scalar fields and phi^{4} interaction, I want to prove the energy-momentum tensor isn't anomalous