2a. In case 1), we take one proton as the target and set it to rest. We accelerate the other proton to 100 GeV (total energy) and let it hit the proton at rest. Compute the s in this situation. b. In case 2), we use a collider system to accelerate both protons to 100 GeV (total energy) and let them move against each other and get collision. It means P1 = - P2. Compute again the s in this situation.
Hint: you may use the following formula during your calculation:
• the proton mass of m_p c^2 = 1 GeV
• for each proton, E^2 = (m_p c^2)^2 + (Pc)^2 with E the total energy of the proton and P its momentum.

3. Can a cyclotron be used to accelerate an electron to 100 MeV? How about accelerate a Proton to
100 MeV? Give your reason for your results.

Please serious answers only, I will flag you if you say you don't know and just want points. I really need the help and this is due tonight and my instructor didn't provide any help nor did my classmates.

During physical science, ms. greene challenged her students to produce an energy transformation. james and jill wrapped a 4-inch nail with a coil of fifty turns of wire. they connected one end of the coil to one terminal of a knife switch. they connected the other terminal of the knife switch to the battery. finally, they connected the end of the coil to the other terminal of the battery. james held the tip of a 1-inch nail near the flat end of the 4-inch nail. jill closed the knife switch quickly and then opened it. the 1-inch nail was pulled toward the 4-inch nail. what is the best explanation of why the nail moved? a) electrical energy was converted to mechanical energy in the 1-inch nail. b) the 4-inch nail became an electromagnet and the magnetic force attracted the 1-inch nail. c) the electric current in the 4-inch nail was converted to mechanical energy in the 1-inch nail. d) the 4-inch nail had a positive charge and the 1-inch nail had a negative charge. opposites attracted.

Place me with this question is my last question

You throw a small rock straight up from the edge of a highway bridge that crosses a river. the rock passes you on its way down, 7.00 s after it was thrown. what is the speed of the rock just before it reaches the water 28.0 m below the point where the rock left your hand? ignore air resistance.