A fisherman is watching water waves ripple past his boat. How could he determine the wavelength of the water waves?

A.
measure the distance between consecutive waves
B.
measure the height of a wave
C.
measure the speed at which the waves pass the boat
D.
measure the number of waves that passes the boat each second

Which is a substance that can be separated by physical means and is not the same throughout

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→∞.

Which of hubble’s discovery support the big bang theory