Which are characteristics of a ray when it hits a boundary and refracts, but not when it hits the boundary and reflects? check all that apply.

a. changes direction
b. changes speed
c. does not change direction
d. does not change speed
e. bounces off the boundary
f. passes through the boundary

The correct options are:

B. changes speed

F. passes through the boundary

These are, in fact, characteristics of a ray when it is refracted, but not when it is reflected.

When a ray is refracted, it passes through a boundary and it changes both speed and direction. However, when a ray is reflected, it does not pass through a boundary: instead, it is bounced off, so it changes direction but it does not change speed (because the speed depends on the medium, so since the medium has not changed, the speed of the ray didn't change).

B and F are the correct choices

Explanation:

no sign of dia of fuel cell

your answer is, orbit around the nucleus