The slowest animal (crab) travels at 5.70 km/yr, how long does it take to travel 80 km?
Vouab

Is there a point between a 10 nc charge and a 20 nc charge at which the electric field is zero?

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?

5400 j of energy are given off when a 50 g of aluminum pan changes temperature. does the temperature of the pan increase or decrease and by how much?