please i need these answers really fast. thanks NAME: EORETICIAN\'S PRAYER: \"DE

Question

please i need these answers really fast. thanks

NAME: EORETICIAN'S PRAYER: "DEAR LORD, FORGIVE ME THE SIN OF OGANCE I MEAN THE FOLLOwIN... ARROGANCE, AND LORD, BY ARR Leon Lederman 1. Decide whether the following statements are true or false Place a T on the blank line itf the statement is true, and place an F if the statement is false a) A relativistic particle of rest mass m should have a velocity vec (3/4) order for its momentum to have magnitude p-2mv b) In the process called pair production, electromagnetic energy is converted into matter with the creation of an electron and a positron. This process requires photon energy of at least 2mec c) A particle has a wavelength that is twice of that of a photon, the photon energy is Ey and the particle's total energy is Es, then E,> E d) In a photoelectric effect experiment at a frequency above cut off, the number of electrons ejected is proportional to the frequency of the incident light e) Compton scattering from stationary electrons for which the emitted light has a frequency that is greater than that of the incident light is forbidden. Q #1 /5 Points Q#2 /10 Points Q#3 /10 Points Q#4 /5Points Total: 30 Points NOTE: SHOW CLEARLY HOW ALL ANSWERS ARE DERIVED

Explanation / Answer

1] p = mv/sqrt(1-v^2/c^2)

2mv =  mv/sqrt(1-v^2/c^2)

  sqrt(1-v^2/c^2) = 0.5

1 - (v/c)^2 = 0.25

v/c = sqrt (3/4)

v = c*(3/4)^(1/2)

TRUE

b]True, because energy of material produced E = mc^2

c] True, because E is proportional to 1/ lambda

d] False, it is proportional to intensity, not frequency

e] True, because if frequency will be more, it will mean more energy than incident photon which is not possible

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