11. what measurement best describes the results of a scientific experiment regarding distance? a. 57 miles b. 523 inches c. 500 kilograms d. 51 kilometers

Which of the following pairs of elements belong to the same groupa. h and he b. li and bec. c and pb d. ga and ge

How will the emission of an alpha particle affect the atomic number of an atom

Plz mark brainliest 30 points 1) find the momentum of a 12 kg snowball that is rolling with a velocity of 9 m/s. 2) an 8 ball with a mass of .5 kg is sitting at rest. it is hit by the cue ball (1 kg) traveling at 2.5 m/s. if the cue ball is at rest after the collision, how fast is the 8 ball traveling after the collision? 3) two football players are running toward each other. if the offensive player is 75 kg and is running 8 m/s, how fast must the 60 kg defensive player run in order for the two players to hit and stop?