A particle X made up of 2 protons and 2 neutrons is emitted from a Polonium - 210 nucleus, travelling with a speed of 20,000 m/s. a) What element is the nucleus after the particle is emitted?
b)Calculate the kinetic energy of particle X

we're given that v₀ = 0 and a = 5.4 m/s². therefore, since v = at + v₀ for constant acceleration the equation for velocity is

after 28s,

m/s

which i would round to 150 m/s as my final answer

r = ρ x length / area  

ρ = r x area / length  

ρ is in ohm-meters  

in basic units, it is m³kg/s³a²  

i think this is it.

electric field is a function of 1/r^2

yes, the force per unit charge for a point charge is inverse square law.