Aperson sneezing while he is dusting his apartment is an example of a(n) response to an stimulus.
a.) voluntary; internal
b.) voluntary; external
c.) involuntary; internal
d.) involuntary; external

Why is the energy that results from a roller coaster's position at the top of a hill referred to as potential energy?

How many neutrons does element x if it’s atomic number is 28 and its mass number is 87

Athin nonconducting rod with a uniform distribution of positive charge q is bent into a circle of radius r. the central perpendicular axis through the ring is a z-axis, with the origin at the center of the ring. a) what is the magnitude of the electric field due to the rod at z = 0? n/c (b) what is the magnitude of the electric field due to the rod at z = infinity? n/c (c) in terms of r, at what positive value of z is that magnitude maximum? r (d) if r = 4.00 cm and q = 9.00 µc, what is the maximum magnitude? n/c