Methane has a particular molecular structure that enables it to trap more heat than carbon dioxide. however, methane does
not exist as long as carbon dioxide in the atmosphere. all of the following are sources of anthropogenic methane except:
1. ruminant digestion
ii. agricultural practices
iii. fertilizers
iv. municipal solid waste landfills
v. deforestation
vi. fossil fuel extraction

Consider a uniformly charged ring in the xy plane, centered at the origin. the ring has radius a and positive charge qdistributed evenly along its circumference. a)what is the direction of the electric field at any point on the z axis? . b)what is the magnitude of the electric field along the positive z axis? use k in your answer, where k=14πϵ0. d)the ball will oscillate along the z axis between z=d and z=−d in simple harmonic motion. what will be the angular frequency ω of these oscillations? use the approximation d≪a to simplify your calculation; that is, assume that d2+a2≈a2. express your answer in terms of given charges, dimensions, and constants