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1. Assume the half-life of the proton is 1033 y. How many decays per year would you expect in a tank of water containing 350,000 liters of water? Assume the bound protons can decay.
2. CERN constructed the ?rst proton-proton collider, called the Intersecting Storage Rings (ISR), in 1971. Each proton beam had a kinetic energy of 31 GeV. Calculate how much energy a ?xed-target accelerator would need to have the same energy available in the center-of-mass energy.
3. Calculate the speed of the 7.0-TeV protons that are produced in the LHC at CERN.
4. A cyclotron is used to accelerate protons to 70 MeV. If these protons are elastically scattered from deuterons (2H) and tritons (3H), what are the maximum ener- gies of the 2H and 3H?
5. Calculate the minimum kinetic energy of a proton to be scattered from a ?xed proton target to produce an antiproton.
What is the impulse of a 5 N force acting for 3s? 4Ns 15Ns
A wooden board that is 50 cm long, 20 cm long, and 4 cm thick is floating in water. Rocks are then carefully placed on the top face of the board until the top of the wood just slips below the water surface. The density of water is 1000 kg/m^3 and ..
A balloon is charged with static electricity until it has a voltage of V = 1300 V. A student reaches out and is shocked by a spark. The electric force does W = 1 x 10-7 J of work transferring the charge. Input an expression for the magnitude of cha..
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A beam of unpolarized light of intensity I 0 passes through a series of ideal polarizing filters with their polarizing directions turned to various angles as shown in the figure (Figure 1) . Assume that θ = 50.0 ° .
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A man with mass 70.0 kg stands on a platform withmass 25.0 kg. He pulls on the free end of a rope thatruns over a pulley on the ceiling and has its other end fastened tothe platform. What is the acceleration of the rope relativeto him
an unstrained horizontal spring has a length of 0.27 m and a spring constant of 230 nm. two small charged objects are
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