Consider the interaction ete t (i give the formula for how the interaction rate at a collider depends geometrical cross section of the beams (ii) draw the tree-level feynman diagram for this interaction, clearly labelling all fundamental particles and the initial and final states (iii) list the gauge bosons that may act as propagators at tree-level for this interaction list the gauge bosons that may not act as propagators for this interactions and state why they can not (iv) state how the cross-section and therefore the probability of the interaction depend on the matrix element m. explain how the matrix element is composed, and give the general prop- agator term. state which propagator would dominate at centre-of-mass energies of 1 gev and 90 gev.

it should be -8.6 cm hope this out

weather forecasts are done by collecting data about the current state of the atmosphere mainly the temperature, humidity and wind and using meteorology, to determine the atmosphere that evolves over time. the h and l mean the high and low pressure. the red strip is a warm front. the blue strip is a cold front. the blue and red strip is a stationary front. the purple strip is a occluded front.

explanation:

a solenoid is created by wrapping a l = 90 m long wire around a hollow tube of diameter d = 4.5 cm.   the wire diameter is d = 0.9 mm.   the solenoid wire is then connected to a power supply so that a current of i = 9 a flows through the wire.

randomized variablesl = 90 m

d = 4.5 cm

d = 0.9 mm

i = 9 a                                          

write an expression for the number of turns, n, in the solenoid. you do not need to take into account the diameter of the wire in this calculation.

calculate the number of turns, n, in the solenoid.

write an expression for the length of the solenoid (l2) in terms of the diameter of the hollow tube d.

calculate the length of the solenoid (l2)   in meters.

calculate the magnitude of the magnetic field at the center of the solenoid in teslas.

explanation:

the skeletons of most mammals reach a certain size and then stop growing. however, many animals, including some mammals, keep growing throughout their lives. kangaroos, for example, just keep growing and growing until they die. also, the longer an animal lives the greater the chance it might catch some deadly disease.