Kepler used the observations and data of which scientist to formulate his laws of planetary motion? a)sir isaac newton b) tycho brahe c) galileo galilei d) nicholas copernicus

What is the single most important equation in all of physics?

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?

What instrument is used to measure liquid volume?