two cylinders are made of the same metal. both cylinders have the same cross-sectional area
but one is longer than the other.
cylinder 2
cyfinder 1
which quantity is the same for both cylinders?
a density
b. mass
c. resistance
d. volume

Sawyer is studying diffraction. he draws a diagram of a plane wave to show how light waves travel. which best describes sawyer’s error? the wave fronts should be perpendicular to the direction in which the waves move. the arrow showing the direction of movement of the waves should be pointing to the left. the arrow showing the direction of movement of the waves should be pointing downward. the wave fronts should be both parallel and perpendicular to the direction in which the waves move.