A) a particle of rest mass m is travelling so that its total energy is 2me2. it collides with a stationary particle of rest mass m to form a new single particle. what is the rest mass of the new particle? 9 marks b) a photon hits an electron at rest and produces an electron-positron pair according to the reaction γ + e-→ e-t-e-+ et, what is the smallest possible photon energy for this to occur? you may assume that electrons and positrons have equal masses. 8 marks c) a photon rocket uses pure radiation as the propellant. if the initial and final rest masses of the rocket are m, and m, show that the final speed v of the rocket, as measured in its initial rest frame, sat isfies m, 8 marks hint: if the total momentum of all photons emitted from the rocket has magnitude p then the total energy of all those photons is ecial to

Which of the following is a homogenous mixture? o a. a toy box filled with toys o b. blood o c. trail mix o d. spaghetti and meatballs submit

Astudent is given an assignment to demonstrate diffraction. he takes a photograph of a straw in a glass of water. the straw appears bent at the water level. which best describes this example? a) this is a good example of diffraction. b) this is an example of dispersion and not diffraction. c) this is an example of refraction and not diffraction. d) this is an example of reflection and not diffraction.

Did the proton move into a region of higher potential or lower potential? did the proton move into a region of higher potential or lower potential? because the proton is a negative charge and it accelerates as it travels, it must be moving from a region of higher potential to a region of lower potential.because the proton is a negative charge and it accelerates as it travels, it must be moving from a region of lower potential to a region of higher potential.because the proton is a positive charge and it slows down as it travels, it must be moving from a region of higher potential to a region of lower potential.because the proton is a positive charge and it slows down as it travels, it must be moving from a region of lower potential to a region of higher potential.request answerpart bwhat was the potential difference that stopped the proton? express your answer with the appropriate units.î”v î” v = nothingnothingrequest answerpart cwhat was the initial kinetic energy of the proton, in electron volts? express your answer in electron volts.ki k i = nothing ev request answerprovide feedback