Name two kinds of longitudinal waves and explain why they are longitudinal

A10.0 kg cart and a 15kg cart are locked together with a compressed spring between them. they are then released so that the spring pushes the two carts apart. the 10.0 kg cart is moving at 4.5 m/s afterward. how fast is the 15kg cart moving? 3.0 m/s 2.0 m/s 4.5 m/s 5.0 m/s

Aray of light traveling parallel to the principal axis of a concave mirror will be reflected through the mirror's

Which transition by an electron will release the greatest amount of energy? oa ob oc od