A parallelogram rotates about its center. At what angle of rotation will the image of the parallelogram coincide with its preimage? A. 30° B. 90° C. 180° D. 270° E. 315°.

current flows in a wire

what experimental evidence led scientists to change from the previous model to this one?

a few of the positive particles aimed at a gold foil seemed to bounce back.

the colors of light emitted from heated atoms had very specific energies.

experiments with water vapor showed that elements combine in specific proportions.

cathode rays were bent in the same way whenever a magnet was brought near them.

answer; how far out of place which the object finished relative to the starting location;