Which of the following has no effect in external magnetic field? with reason pl
a)charge moving in the direction perpendicular to field
b)chaning flux
c)charge at rest
d)current carrying conductor
e)current carrying coil

Will you chech and finish these for me, because i am stumped with them.

If the radius of curvature of the cornea is 0.75 cm when the eye is focusing on an object 36.0 cm from the cornea vertex and the indexes of refraction are as described before, what is the distance from the cornea vertex to the retina? express your answer to two significant

Because atoms of elements in the same group of thbecause atoms of elements in the same group of the periodic table have the same number of neutrons, they have similar properties. select the best answer from the choices provided t fe periodic table have the same number of neutrons, they have similar properties. select the best answer from the choices provided t f