For a science project, janet performs four experiments that are supposed to show a chemical reaction. she displays her results in a table. in the column titled “chemical reaction? ,” which experiment’s data should be changed to “no”? experiment 1 experiment 2 experiment 3 experiment 4

What is the momentum of a 2 kg object moving at 15 meters per second

Agirl throws a ball. if the ball's acceleration is 12 m/sec/sec and its mass is 0.5 kg, how much force did the girl apply to the ball?

The gun from the crime scene shows tool marks where the serial numbers are ground off. there are also tool marks on the bullets left behind. what information can the tool marks on the bullets and gun provide about the crime? what type of evidence does this information provide, individual or class?