- The moon rotates around the Earth every 28 days. What is the frequency of the moon’s revolution?

If steel is more dense that lake water, why can a boat float

The force it would take to accelerate an 900-kg car at the rate of 6m/s2

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?