A girl on a bicycle rides down a hill 8,600 meters. Then the girl rides up the hill 10,000 meters to her grandparents house. The entire bicycle trip lasted 300 seconds. What is the average velocity of the What is the conversion time in minutes?​

firearm identification is the process of analyzing the bullets and cartridge cases left at a crime scene to determine if they came from a particular firearm. marks on the bullets and cartridges may be common to every firearm of that type. these are called class characteristics.

the answer is the first electromagnet (a). this is because it has more coils around the ferromagnetic material. increasing the number of coils increases the surface area in which the metal interacts with the current in the coil. this enables more atoms in the metal to become aligned hence becoming more magnetized.