The density of air is 1.3 kg/m3 at sea level. from your knowledge of air pressure at ground level, estimate the height of the atmosphere. as a simplifying assumption, take the atmosphere to be of uniform density up to some height, after which the density rapidly falls to zero. (in reality, the density of the atmosphere decreases as we go up.)

Which is not true about oxygen-17 and oxygen-18?

Aforce of 100 newtons is used to move an object a distance of 15 meters with a power of 50 watts. find the work dine and the time it takes to do the work

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→∞.