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1. The cross section ratio R of (18-6) is based on the quark-parton model. This result is altered slightly in QCD because of the appearance of gluons. Considering what happens to hadronic jets as the energy increases, in what direction would you expect R to change due to QCD corrections and why?
2. In what way is the non-Abelian nature of QCD essential in converting the global symmetry of color to a local symmetry? Why can the same result be achieved in Abelian QED?
Suppose a pulsar of mass 1.50 *10^30 kg and radius 20.0 km is spinning at the rate of 2.10 rev/s and is slowing down at the rate of 1.40*10^-15 rev/s^2. how long will it take the pulsar to come to a stop
A horizontal wire is free to slide on the vertical rails of a conducting frame, what is the terminal speed of the wire
question1a 24 rm g 3-cm-diameter thin hollow sphere rotates at 30rpm about a vertical frictionless axis throughout its
One mass, m1 = 0.215 kilogram, of an ideal at wood machine rests on the floor 1.1 meter below the other mass, m2 =0.255 kilogram. Estimate how high will mass m1 ascend from the floor
A 17 kg girl slides down a playground slide that is 3.1 m high. When she reaches the bottom of the slide, her speed is 1.3 m/s. what is the coefficient of friction between the girl and the slide
A horse pulls a cart on a level road with a force of 140.0 Newton at angle of 25.0 degree with respect to the horizontal. Compute how much work does the horse do in 12.6 minute
A vehicle whose initial speed is 30 m/s slows uniformly to 10 m/s in 5 sec. Evaluate the acceleration of the vehicle
A proton an electron is held in place on the x axis. The proton is at x= +d. Find which particle reaches the origin first
heat was applied and the temperature was bact to 85F. find the final weight, volume, and pressure of the gas.
Ball bearings can be made by letting spherical drops of molten metal fall in a tall tower - called a shot tower - and solidify as they fall. If a bearing needs 4.0s to solidify enough for impact, how high should the tower be?
Two children hang by their hands from the same tree branch. The branch is straight, and grows out from the tree at an angle of 33° above the horizontal. What is the magnitude of the net torque exerted on the branch by the children
a meter stick lies along the x axis of the lab frame and approaches the origin with velocity szlig. a thin plate
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