An electron and a proton are each accelerated starting from rest through a potential difference of 20.0 million volts. find the momentum (in mev/c) and the kinetic energy (in mev) of each, and compare with the results of using the classical formulas. (give your answers to at least four significant figures.)

(2) (a) you have a simple circuit that consists of only a battery (δvbat=1.5v) and two resistors with resistance r1=10ω and r2=5ω, connected in series with each other. what is the current running through the battery? (b) you re-arrange your circuit so now r2 is attached in parallel to r1 rather than in series. what is the current running through the battery? (c) you add an additional resistor r3=7ω on the same branch as r2. what is the current running through the battery? (d) what is the power dissipated in r3?