Title: Electromagnet Model Materials:
1 battery
electrical wire
thumbtacks I large iron noil pins
Procedures:
INote: Make sure that the iron nail does not have any rust. Be careful in handling materials. )
1. Make an electromagnet by winding the electrical wire around the large nail
2. Connect both ends of the wire to a dry cell.
3. Test the electromagnet by placing some pins and thumbtacks near the nail Does the nail attract
The pins and thumbtacks?
4 Loosen the coil of wire in the electromagnet and find out how many metals are attracted to the
nas Now wind more coils of wire which setup attract more metals
5. Add more dry cells to the electromagnet Make sure you connect the dry cells properly Which ser
up acts more metals
6. Change the nail into a smaller one which setup attracts more metals?​

answer: he got 23

explanation:

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.

as we know our atmosphere or air have different levels. every level has other gasses, and every gas has another permeability. when the light comes from lower permeability to higher permeability, it changes its direction. so that means that when the light comes from the moon to the earth, it changes it's direction many more times. it basically means that the shape of the light part of the moon is changed on the earth.

hope this ! this is not copied! search it up, it's free of plagiarism!

i think the answer is a and b

i wish you luck