Please explain I am so confused on this At what distance would the repulsive force between two protons have a 2 points
magnitude of 2.00 N? Let the charge on a proton be e = 1.6 10^-19 C,
and let constant k = 8.99 X 10^9 Nm2/C2. *
A) 1.07 x 10^-14 m
B) 1.28 x 10^-38 m
C) 7.19 x 10^-10 m
D) 2.68 x 10^-4 m

(I think it is either A or B but I’m not sure)

Matt is driving down 7th street. he drives 150 meters in 18 seconds. assuming he does not speed up or slow down, what is his speed?

•• al and bert are jogging side-by-side on a trail in the woods at a speed of 0.75 m/s. suddenly al sees the end of the trail 35 m ahead and decides to speed up to reach it. he accelerates at a constant rate of 0.50 m/s2, while bert continues on at a constant speed. (a) how long does it take al to reach the end of the trail? (b) once he reaches the end of the trail, he immediately turns around and heads back along the trail with a constant speed of 0.85 m/s. how long does it take him to meet up with bert? (c) how far are they from the end of the trail when they meet?

An electron and a proton have the same kinetic energy upon entering a region of constant magnetic field and their velocity vectors are perpendicular to the magnetic field. suppose the magnetic field is strong enough to allow the particles to circle in the field. note: you'll need to look up the masses for an electron and proton. 1) what is the ratio of the radii of their circular paths rp/re?