During july 1994 the comet shoemaker-levy 9 smashed into jupiter in a spectacular fashion. the comet actually consisted of 21 distinct pieces, the largest of which had a mass of approximately 4.0 · 1012 kg and a speed of 6.0 · 104 m/s. jupiter has a mass of 1.9 · 1027 kg and an orbital speed of 1.3 · 104 m/s. if this piece of the comet had hit jupiter head on, what would have been the change (magnitude only) in jupiter’s orbital speed (not its final speed)?

Radioisotopes often emit alpha particles, beta particles, or gamma rays. the distance they travel through matter increases in order from alpha to gamma. each radioisotope has a characteristic half-life, which is the time needed for half of a sample of radioisotope to undergo nuclear decay. which quality is desirable for a radioisotope that is used for medical imaging of a specific organ? check all that apply. half-life of several years half-life of several days half-life of several seconds emission of gamma rays emission of alpha particles ability to be attached to a compound used by the body ability to pass through the body without being absorbed