In a certain region, the electric field is given by D=2rho(z+1) cos⁡ϕ a_rho-rho(z+1) sin⁡ϕ a_ϕ+rho^2 cos⁡ϕ a_z μC/m^2 Find the charge density. Calculate the total charge enclosed by the volume 0

the independent variable, the one that is intentionally manipulated, is whether or not the car hits the barrier.

the dependent variable, the one that you measure the response in, is the distance that the washers travel.

explanation:

wheres the pic

blue light is scattered in different directions by the tiny molecules of air. blue is scattered more than other colours because it has a shorter distance to travel which results in smaller waves. this is why we see a blue sky most of the time.