Cora had a chemical splash into her eyes. she immediately told her teacher and went to the eyewash station. she then proceeded to wash her eyes out until they no longer hurt, which took about ten minutes. she then returned to her station, cleaned up any chemical spills according to directions, and started her project over.

Asample of radium-226 will decay 1/4 of its original amount after 3200years. what is the half-life of radium-226?

The wave shown on the electromagnetic spectrum disturb the medium it passes through a)different frequency. b)the same frequency .

Plz mark brainliest 30 points1) 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?