The car is heading from city a at 9:45:12 am to city B at the speed of 70 km/h it reach city B at 11:30:07 am it rest for 45 minutes in city B then countine its motion toward city C with a speed of 80 km/h it reach city C at 14:30:08 a-calculate the duration of the whole trip in second
b-calculate the distance covered city between a and b
c-calculate the distance covered between city b and c​

Intro: a solid ball of radius rb has a uniform charge density ρ. part a: what is the magnitude of the electric field e(r) at a distance r> rb from the center of the ball? express your answer in terms of ρ, rb, r, and ϵ0. part b: what is the magnitude of the electric field e(r) at a distance r express your answer in terms of ρ, rb, r, and ϵ0. part c: let e(r) represent the electric field due to the charged ball throughout all of space. which of the following statements about the electric field are true? check all that apply. e(0) = 0 e(rb)=0 limr→∞e(r)=0 the maximum electric field occurs when r=0 the maximum electric field occurs when r=rb the maximum electric field occurs as r→∞.